Cisco Security Advisory: Cisco IOS Software H.323 Denial of Service Vulnerabilities

2011 年 3 月 10 日 - ライター翻訳版
その他のバージョン: PDFpdf | 英語版 (2010 年 9 月 23 日) | フィードバック


Advisory ID: cisco-sa-20100922-h323

http://www.cisco.com/warp/public/707/cisco-sa-20100922-h323.shtml

日本語による情報は、英語による原文の非公式な翻訳であり、英語原文との間で内容の齟齬がある場合には、英語原文が優先します。

Revision 1.2

Last Updated 2011 March 10 2200 UTC (GMT)

For Public Release 2010 September 22 1600 UTC (GMT)


要約

Cisco IOS® ソフトウェアの H.323 の実装には 2 つの脆弱性が存在します。これらがリモートから不正利用されると、脆弱性の存在する Cisco IOS ソフトウェアが稼働しているデバイス上で Denial of Service(DoS; サービス拒否)状態が引き起こされる可能性があります。

シスコはこれらの脆弱性に対応するための無償ソフトウェア アップデートを提供しています。脆弱性が存在するデバイスで H.323 を無効にする以外に、この脆弱性に対する回避策はありません。

このアドバイザリは次のリンクに掲載されます。 http://www.cisco.com/warp/public/707/cisco-sa-20100922-h323.shtml

注: 2010 年 9 月 22 日の Cisco IOS ソフトウェア セキュリティ アドバイザリ バンドル公開には 6 件の Cisco Security Advisory が含まれています。5 件のアドバイザリは Cisco IOS ソフトウェアの脆弱性に対処するもので、1 件は Cisco Unified Communications Manager の脆弱性に対処するものです。各アドバイザリには、そのアドバイザリで詳述された脆弱性を解決するリリースを記載しています。次の URL のテーブルには、2010 年 9 月 22 日より以前に公開された Cisco IOS ソフトウェアのすべての脆弱性を解決するリリースの一覧が記載されています。

http://www.cisco.com/warp/public/707/cisco-sa-20100922-bundle.shtml

個々の公開リンクは次のリンクにある「Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled Publication」内に掲載されています。

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep10.html

該当製品

これらの脆弱性の影響を受けるのは、H.323 音声サービスをイネーブルにした Cisco IOS ソフトウェアを実行しているデバイスだけです。

脆弱性が存在する製品

該当する Cisco IOS ソフトウェア バージョンが実行されているシスコ デバイスで H.323 メッセージを処理するよう設定されている場合は、これらの脆弱性の影響を受けます。デフォルトでは、H.323 はイネーブルではありません。

Cisco IOS ソフトウェア デバイスが H.323 サービスを実行しているか判断するには、show process cpu | include H323 コマンドを実行します。次に例を示します。

Router# show process cpu | include H323
 249       16000           3       5333  0.00%  0.00%  0.00%   0 CCH323_CT
 250           0           1          0  0.00%  0.00%  0.00%   0 CCH323_DNS
Router# 

前述の例では、デバイス上でプロセス CCH323_CT と CCH323_DNS が実行されているため、デバイスは H.323 メッセージをリスニングしています。これらのプロセス(または同様のプロセス)がアクティブになっている場合、デバイスには脆弱性が存在します。

注: dial-peer voice コマンドの実行によってダイヤル ピアを作成すると、H.323 プロセスが開始され、Cisco IOS デバイスは H.323 メッセージの処理を行います。

シスコ製品で稼働している Cisco IOS ソフトウェア リリースを確認するには、デバイスにログインし show version コマンドを実行してシステム バナーを表示させます。「Internetwork Operating System Software」、「Cisco IOS Software」、あるいはこれらに類似するシステム バナーによってデバイスで Cisco IOS ソフトウェアが稼動していることを確認できます。 その後ろにイメージ名が括弧の間に表示され、続いてバージョンと Cisco IOS ソフトウェア リリース名が表示されます。他のシスコ デバイスでは、 show version コマンドがない場合や、表示が異なる場合があります。

次の例は、シスコ製品で Cisco IOS ソフトウェア リリース 12.3(26) が稼働し、インストールされているイメージ名が C2500-IS-L であることを示しています。

Router# show version
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by cisco Systems, Inc.
Compiled Mon 17-Mar-08 14:39 by dchih


!--- output truncated

次の例は、シスコ製品で Cisco IOS ソフトウェア リリース 12.4(20)T が稼働し、インストールされているイメージ名が C1841-ADVENTERPRISEK9-M であることを示しています。

Router# show version
Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T,
    RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Thu 10-Jul-08 20:25 by prod_rel_team


!--- output truncated

Cisco IOS ソフトウェアのリリース命名規則の追加情報は、次のリンクの『White Paper: Cisco IOS Reference Guide』で確認できます。 http://www.cisco.com/web/about/security/intelligence/ios-ref.html

脆弱性が存在しない製品

Cisco IOS XR ソフトウェアは、これらの脆弱性の影響を受けません。

他のシスコ製品においてこのアドバイザリの影響を受けるものは、現在確認されていません。

詳細

H.323 は、パケットベース(IP)ネットワーク上のリアルタイム マルチメディア通信および会議の International Telecommunication Union(ITU)標準です。H.323 標準のサブセットは H.225.0 で、コール シグナリング プロトコルや IP ネットワーク上でのメディア ストリームのパケット化に使用される標準です。

Cisco IOS ソフトウェアの H.323 の実装には、2 つの Dos 脆弱性があります。Cisco IOS ソフトウェア実行中の影響を受けるデバイスに対して、巧妙に細工した H.323 パケットをリモートから送信することにより、攻撃者がこれらの脆弱性を不正利用できます。これらの脆弱性を不正利用するには、TCP 3 ウェイ ハンドシェイクが必要です。

これらの脆弱性は、Cisco Bug ID CSCtc73759 登録ユーザのみ)および CSCtd33567 登録ユーザのみ)として文書化され、Common Vulnerabilities and Exposures(CVE)ID として CVE-2010-2828 および CVE-2010-2829 がそれぞれ割り当てられています。

脆弱性スコア詳細

シスコはこのアドバイザリでの脆弱性に対して Common Vulnerability Scoring System(CVSS)に基づいたスコアを提供しています。このセキュリティ アドバイザリでの CVSS スコアは CVSS バージョン 2.0 に基づいています。

CVSS は、脆弱性の重要度を示唆するもので、緊急性および対応の優先度を決定する手助けとなる標準ベースの評価法です。

シスコは基本評価スコア(Base Score)および現状評価スコア(Temporal Score)を提供しています。お客様はこれらを用いて環境評価スコア(Environmental Score)を算出し、個々のネットワークにおける脆弱性の影響度を導き出すことができます。

シスコは次の URL にて CVSS に関する FAQ を提供しています。

http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html

また、シスコは個々のネットワークにおける環境影響度を算出する CVSS 計算ツールを以下の URL にて提供しています。

http://tools.cisco.com/security/center/cvssCalculator.x

CSCtc73759 - Device crashing upon receipt of specific traffic

Calculate the environmental score of CSCtc73759

CVSS Base Score - 7.8

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

None

None

Complete

CVSS Temporal Score - 6.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

CSCtd33567 - Traceback seen when receiving crafted H.323 packets

Calculate the environmental score of CSCtd33567

CVSS Base Score - 7.8

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

None

None

Complete

CVSS Temporal Score - 6.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

影響

このアドバイザリで説明されている脆弱性が悪用されると、該当するデバイスがクラッシュする可能性があります。またこれらの脆弱性が繰り返し不正利用されることにより、長時間にわたって DoS 状態が発生させられることがあります。

ソフトウェア バージョン及び修正

ソフトウェアのアップグレードを検討する際には、 http://www.cisco.com/go/psirt/ および本アドバイザリ以降に公開のアドバイザリも参照して、起こりうる障害と完全なアップグレード ソリューションを判断してください。

いずれの場合も、アップグレードするデバイスに十分なメモリがあること、および現在のハードウェアとソフトウェアの構成が新しいリリースで引き続き適切にサポートされていることの確認を十分に行ってください。情報が不明確な場合は、Cisco Technical Assistance Center(TAC)もしくは契約しているメンテナンス プロバイダーにお問い合わせください。

Cisco IOS ソフトウェア テーブル(下記)の各行は Cisco IOS ソフトウェア トレインを示します。あるトレインが脆弱である場合、修正を含む最初のリリースは「First Fixed Release For This Advisory」列に示されます。「First Fixed Release for All Advisories in the September 2010 Bundle Publication」列は、その Cisco IOS ソフトウェア セキュリティ アドバイザリ バンドル公開で公開済みであるすべての脆弱性を修正する最初のリリースを示します。シスコは利用可能な最新のリリースへのアップグレードを推奨します。

Major Release

Availability of Repaired Releases

Affected 12.0-Based Releases

First Fixed Release for This Advisory

First Fixed Release for All Advisories in the September 2010 Bundle Publication

There are no affected 12.0-based releases

Affected 12.1-Based Releases

First Fixed Release for This Advisory

First Fixed Release for All Advisories in the September 2010 Bundle Publication

12.1

Not vulnerable

Vulnerable; first fixed in 12.4T

Releases up to and including 12.1(4b) are not vulnerable.

12.1AA

Not vulnerable

Not vulnerable

12.1AX

Not vulnerable

Not vulnerable

12.1AY

Not vulnerable

Not vulnerable

12.1AZ

Not vulnerable

Not vulnerable

12.1CX

Not vulnerable

Not vulnerable

12.1DA

Not vulnerable

Not vulnerable

12.1DB

Not vulnerable

Not vulnerable

12.1DC

Not vulnerable

Not vulnerable

12.1E

Not vulnerable

Not vulnerable

12.1EA

Not vulnerable

Not vulnerable

12.1EB

Not vulnerable

Not vulnerable

12.1EC

Not vulnerable

Not vulnerable

12.1EO

Not vulnerable

Not vulnerable

12.1EU

Not vulnerable

Not vulnerable

12.1EV

Not vulnerable

Not vulnerable

12.1EW

Not vulnerable

Not vulnerable

12.1EX

Not vulnerable

Not vulnerable

12.1EY

Not vulnerable

Not vulnerable

12.1EZ

Not vulnerable

Not vulnerable

12.1GA

Not vulnerable

Not vulnerable

12.1GB

Not vulnerable

Not vulnerable

12.1T

Vulnerable; first fixed in 12.4

Releases up to and including 12.1(3a)T8 are not vulnerable.

Vulnerable; first fixed in 12.4T

Releases up to and including 12.1(3a)T8 are not vulnerable.

12.1XA

Not vulnerable

Not vulnerable

12.1XB

Not vulnerable

Not vulnerable

12.1XC

Not vulnerable

Not vulnerable

12.1XD

Not vulnerable

Not vulnerable

12.1XE

Not vulnerable

Not vulnerable

12.1XF

Not vulnerable

Not vulnerable

12.1XG

Not vulnerable

Not vulnerable

12.1XH

Not vulnerable

Not vulnerable

12.1XI

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XJ

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XL

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XM

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XP

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XQ

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XR

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XS

Vulnerable; first fixed in 12.4

Releases up to and including 12.1(3)XS are not vulnerable.

Vulnerable; first fixed in 12.4T

Releases up to and including 12.1(3)XS are not vulnerable.

12.1XT

Vulnerable; first fixed in 12.4

Releases up to and including 12.1(2)XT2 are not vulnerable.

Vulnerable; first fixed in 12.4T

Releases up to and including 12.1(2)XT2 are not vulnerable.

12.1XU

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XV

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1XW

Not vulnerable

Not vulnerable

12.1XX

Not vulnerable

Not vulnerable

12.1XY

Vulnerable; first fixed in 12.4

Releases up to and including 12.1(4)XY are not vulnerable.

Vulnerable; first fixed in 12.4T

Releases up to and including 12.1(4)XY are not vulnerable.

12.1XZ

Not vulnerable

Not vulnerable

12.1YA

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1YB

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1YC

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1YD

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1YE

Releases prior to 12.1(5)YE6 are vulnerable, release 12.1(5)YE6 and later are not vulnerable; first fixed in 12.4

Releases prior to 12.1(5)YE6 are vulnerable, release 12.1(5)YE6 and later are not vulnerable; first fixed in 12.4T

12.1YF

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1YH

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.1YI

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.1YJ

Not vulnerable

Not vulnerable

Affected 12.2-Based Releases

First Fixed Release for This Advisory

First Fixed Release for All Advisories in the September 2010 Bundle Publication

12.2

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2B

Vulnerable; first fixed in 12.4

Releases up to and including 12.2(2)B7 are not vulnerable.

Vulnerable; first fixed in 12.4T

Releases up to and including 12.2(2)B7 are not vulnerable.

12.2BC

Not vulnerable

Not vulnerable

12.2BW

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2BX

Vulnerable; first fixed in 12.2SB

Releases up to and including 12.2(15)BX are not vulnerable.

Vulnerable; first fixed in 12.2SB

Releases up to and including 12.2(15)BX are not vulnerable.

12.2BY

Vulnerable; first fixed in 12.4

Releases up to and including 12.2(2)BY3 are not vulnerable.

Vulnerable; first fixed in 12.4T

Releases up to and including 12.2(2)BY3 are not vulnerable.

12.2BZ

Not vulnerable

Not vulnerable

12.2CX

Not vulnerable

Not vulnerable

12.2CY

Not vulnerable

Not vulnerable

12.2CZ

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2DA

Not vulnerable

Not vulnerable

12.2DD

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2DX

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2EW

Not vulnerable

Not vulnerable

12.2EWA

Not vulnerable

Not vulnerable

12.2EX

Vulnerable; migrate to any release in 12.2SE

Not vulnerable

12.2EY

Not vulnerable

Not vulnerable

12.2EZ

Not vulnerable

Not vulnerable

12.2FX

Not vulnerable

Not vulnerable

12.2FY

Not vulnerable

Not vulnerable

12.2FZ

Not vulnerable

Not vulnerable

12.2IRA

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IRB

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IRC

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IRD

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IRE

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IXA

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IXB

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IXC

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IXD

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IXE

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IXF

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IXG

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2IXH

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2JA

Not vulnerable

Not vulnerable

12.2JK

Not vulnerable

Not vulnerable

12.2MB

Not vulnerable

Not vulnerable

12.2MC

Releases up to and including 12.2(15)MC1 are not vulnerable.

Releases 12.2(15)MC2b and later are not vulnerable; first fixed in 12.4

Releases up to and including 12.2(15)MC1 are not vulnerable.Releases 12.2(15)MC2b and later are not vulnerable; first fixed in 12.4T

12.2MRA

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2MRB

Not vulnerable

12.2(33)MRB2

12.2S

Releases prior to 12.2(30)S are vulnerable, release 12.2(30)S and later are not vulnerable

Releases prior to 12.2(30)S are vulnerable, release 12.2(30)S and later are not vulnerable

12.2SB

12.2(31)SB19

Releases prior to 12.2(33)SB5 are vulnerable, release 12.2(33)SB5 and later are not vulnerable

12.2(31)SB19

Releases prior to 12.2(33)SB5 are vulnerable, release 12.2(33)SB5 and later are not vulnerable

12.2SBC

Vulnerable; first fixed in 12.2SB

Vulnerable; first fixed in 12.2SB

12.2SCA

Vulnerable; first fixed in 12.2SCB

Vulnerable; first fixed in 12.2SCB

12.2SCB

12.2(33)SCB10

12.2(33)SCB9

12.2(33)SCB8

12.2(33)SCB9

12.2SCC

12.2(33)SCC5

12.2(33)SCC4

12.2(33)SCC5

12.2SCD

12.2(33)SCD3

12.2(33)SCD4

12.2(33)SCD3

12.2SE

Not vulnerable

Not vulnerable

12.2SEA

Not vulnerable

Not vulnerable

12.2SEB

Not vulnerable

Not vulnerable

12.2SEC

Not vulnerable

Not vulnerable

12.2SED

Not vulnerable

Not vulnerable

12.2SEE

Not vulnerable

Not vulnerable

12.2SEF

Not vulnerable

Not vulnerable

12.2SEG

Not vulnerable

Not vulnerable

12.2SG

Releases prior to 12.2(40)SG are vulnerable, release 12.2(40)SG and later are not vulnerable; migrate to any release in 12.2SGA

Releases prior to 12.2(40)SG are vulnerable, release 12.2(40)SG and later are not vulnerable; migrate to any release in 12.2SGA

12.2SGA

Not vulnerable

Not vulnerable

12.2SL

Not vulnerable

Not vulnerable

12.2SM

Not vulnerable

Not vulnerable

12.2SO

Not vulnerable

Not vulnerable

12.2SQ

Not vulnerable

Not vulnerable

12.2SRA

Releases prior to 12.2(33)SRA6 are vulnerable, release 12.2(33)SRA6 and later are not vulnerable

Releases prior to 12.2(33)SRA6 are vulnerable, release 12.2(33)SRA6 and later are not vulnerable

12.2SRB

Releases prior to 12.2(33)SRB1 are vulnerable, release 12.2(33)SRB1 and later are not vulnerable

Releases prior to 12.2(33)SRB1 are vulnerable, release 12.2(33)SRB1 and later are not vulnerable

12.2SRC

Vulnerable; first fixed in 12.2SRE

Not vulnerable

12.2SRD

Vulnerable; first fixed in 12.2SRE

Not vulnerable

12.2SRE

12.2(33)SRE1

12.2(33)SRE1

12.2STE

Not vulnerable

Not vulnerable

12.2SU

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2SV

Releases prior to 12.2(29b)SV1 are vulnerable, release 12.2(29b)SV1 and later are not vulnerable; migrate to any release in 12.2SVD

Releases prior to 12.2(29b)SV1 are vulnerable, release 12.2(29b)SV1 and later are not vulnerable; migrate to any release in 12.2SVD

12.2SVA

Not vulnerable

Not vulnerable

12.2SVC

Not vulnerable

Not vulnerable

12.2SVD

Not vulnerable

Not vulnerable

12.2SVE

Not vulnerable

Not vulnerable

12.2SW

Releases up to and including 12.2(21)SW1 are not vulnerable.

Releases 12.2(25)SW12 and later are not vulnerable; first fixed in 12.4T

Releases up to and including 12.2(21)SW1 are not vulnerable.Releases 12.2(25)SW12 and later are not vulnerable; first fixed in 12.4T

12.2SX

Not vulnerable

Releases up to and including 12.2(14)SX2 are not vulnerable.

12.2SXA

Releases prior to 12.2(17b)SXA2 are vulnerable, release 12.2(17b)SXA2 and later are not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2SXB

Releases prior to 12.2(17d)SXB7 are vulnerable, release 12.2(17d)SXB7 and later are not vulnerable; migrate to any release in 12.2SXE

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2SXD

Releases prior to 12.2(18)SXD2 are vulnerable, release 12.2(18)SXD2 and later are not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2SXE

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2SXF

Only 12.2(18)SXF7 and 12.2(18)SXF8 are vulnerable

Releases prior to 12.2(18)SXF11 are vulnerable, release 12.2(18)SXF11 and later are not vulnerable

12.2SXH

Not vulnerable

Not vulnerable

12.2SXI

Not vulnerable

Not vulnerable

12.2SY

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Not vulnerable

12.2SZ

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2T

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2TPC

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2XA

Vulnerable; first fixed in 12.4

Releases up to and including 12.2(1)XA are not vulnerable.

Vulnerable; first fixed in 12.4T

12.2XB

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XC

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XD

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XE

Not vulnerable

Not vulnerable

12.2XF

Not vulnerable

Not vulnerable

12.2XG

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XH

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XI

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XJ

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XK

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XL

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XM

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XN

Releases prior to 12.2(33)XN1 are vulnerable, release 12.2(33)XN1 and later are not vulnerable; first fixed in 12.2SB

Vulnerable; first fixed in 12.2SB

12.2XNA

Please see Cisco IOS-XE Software Availability

Please see Cisco IOS-XE Software Availability

12.2XNB

Please see Cisco IOS-XE Software Availability

Please see Cisco IOS-XE Software Availability

12.2XNC

Please see Cisco IOS-XE Software Availability

Please see Cisco IOS-XE Software Availability

12.2XND

Please see Cisco IOS-XE Software Availability

Please see Cisco IOS-XE Software Availability

12.2XNE

Please see Cisco IOS-XE Software Availability

Please see Cisco IOS-XE Software Availability

12.2XNF

Please see Cisco IOS-XE Software Availability

Please see Cisco IOS-XE Software Availability

12.2XO

Not vulnerable

Not vulnerable

12.2XQ

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XR

Not vulnerable

Not vulnerable

12.2XS

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XT

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XU

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XV

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2XW

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2YA

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2YB

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YC

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YD

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YE

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YF

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YG

Not vulnerable

Not vulnerable

12.2YH

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YJ

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YK

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YL

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YM

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2YN

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YO

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Not vulnerable

12.2YP

Not vulnerable

Not vulnerable

12.2YQ

Not vulnerable

Not vulnerable

12.2YR

Not vulnerable

Not vulnerable

12.2YS

Not vulnerable

Not vulnerable

12.2YT

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YU

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YV

Releases prior to 12.2(11)YV1 are vulnerable, release 12.2(11)YV1 and later are not vulnerable

Releases prior to 12.2(11)YV1 are vulnerable, release 12.2(11)YV1 and later are not vulnerable

12.2YW

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YX

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YY

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2YZ

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2ZA

Not vulnerable

Not vulnerable

12.2ZB

Releases up to and including 12.2(8)ZB are not vulnerable.

Releases up to and including 12.2(8)ZB are not vulnerable.

12.2ZC

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2ZD

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2ZE

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2ZF

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2ZG

Not vulnerable

Not vulnerable

12.2ZH

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.2ZJ

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2ZL

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2ZP

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2ZU

Vulnerable; migrate to any release in 12.2SXH

Releases up to and including 12.2(18)ZU are not vulnerable.

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2ZX

Not vulnerable

Not vulnerable

12.2ZY

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.2ZYA

Not vulnerable

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Affected 12.3-Based Releases

First Fixed Release for This Advisory

First Fixed Release for All Advisories in the September 2010 Bundle Publication

12.3

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3B

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3BC

Not vulnerable

Not vulnerable

12.3BW

Not vulnerable

Not vulnerable

12.3EU

Not vulnerable

Not vulnerable

12.3JA

Not vulnerable

Not vulnerable

12.3JEA

Not vulnerable

Not vulnerable

12.3JEB

Not vulnerable

Not vulnerable

12.3JEC

Not vulnerable

Not vulnerable

12.3JED

Not vulnerable

Not vulnerable

12.3JK

Releases up to and including 12.3(2)JK3 are not vulnerable.

Releases 12.3(8)JK1 and later are not vulnerable; first fixed in 12.4

Releases up to and including 12.3(2)JK3 are not vulnerable.Releases 12.3(8)JK1 and later are not vulnerable; first fixed in 12.4T

12.3JL

Not vulnerable

Not vulnerable

12.3JX

Not vulnerable

Not vulnerable

12.3T

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3TPC

Releases up to and including 12.3(4)TPC11a are not vulnerable.

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.3VA

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.3XA

Releases prior to 12.3(2)XA7 are vulnerable, release 12.3(2)XA7 and later are not vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XB

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.3XC

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XD

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XE

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XF

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.3XG

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XI

Releases prior to 12.3(7)XI11 are vulnerable, release 12.3(7)XI11 and later are not vulnerable; first fixed in 12.2SB

Releases prior to 12.3(7)XI11 are vulnerable, release 12.3(7)XI11 and later are not vulnerable; first fixed in 12.2SB

12.3XJ

Vulnerable; first fixed in 12.3YX

Vulnerable; first fixed in 12.4XR

12.3XK

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XL

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.3XQ

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XR

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XS

Not vulnerable

Vulnerable; first fixed in 12.4T

12.3XU

Vulnerable; first fixed in 12.4T

Releases up to and including 12.3(8)XU1 are not vulnerable.

Vulnerable; first fixed in 12.4T

12.3XW

Vulnerable; first fixed in 12.3YX

Vulnerable; first fixed in 12.4T

12.3XX

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XY

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3XZ

Vulnerable; first fixed in 12.4

Vulnerable; first fixed in 12.4T

12.3YA

Not vulnerable

Vulnerable; first fixed in 12.4T

12.3YD

Not vulnerable

Vulnerable; first fixed in 12.4T

12.3YF

Vulnerable; first fixed in 12.3YX

Vulnerable; first fixed in 12.4XR

12.3YG

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.3YH

Not vulnerable

Vulnerable; first fixed in 12.4T

12.3YI

Not vulnerable

Vulnerable; first fixed in 12.4T

12.3YJ

Not vulnerable

Vulnerable; first fixed in 12.4T

12.3YK

Releases prior to 12.3(11)YK3 are vulnerable, release 12.3(11)YK3 and later are not vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.3YM

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.3YQ

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.3YS

Vulnerable; first fixed in 12.4T

Releases up to and including 12.3(11)YS1 are not vulnerable.

Vulnerable; first fixed in 12.4T

12.3YT

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.3YU

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.3YX

12.3(14)YX17

Vulnerable; first fixed in 12.4XR

12.3YZ

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.3ZA

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

Affected 12.4-Based Releases

First Fixed Release for This Advisory

First Fixed Release for All Advisories in the September 2010 Bundle Publication

12.4

12.4(25d)

12.4(25d)

12.4GC

12.4(24)GC2

12.4(24)GC2

12.4JA

Not vulnerable

Not vulnerable

12.4JDA

Not vulnerable

Not vulnerable

12.4JDC

Not vulnerable

Not vulnerable

12.4JDD

Not vulnerable

Not vulnerable

12.4JHA

Not vulnerable

Not vulnerable

12.4JHB

Not vulnerable

Not vulnerable

12.4JK

Not vulnerable

Not vulnerable

12.4JL

Not vulnerable

Not vulnerable

12.4JMA

Not vulnerable

Not vulnerable

12.4JMB

Not vulnerable

Not vulnerable

12.4JX

Not vulnerable

Not vulnerable

12.4JY

Not vulnerable

Not vulnerable

12.4MD

Not vulnerable

12.4(24)MD2

12.4MDA

12.4(22)MDA4

12.4(22)MDA4

12.4MR

Vulnerable; first fixed in 12.4MRA

Vulnerable; first fixed in 12.4MRA

12.4MRA

12.4(20)MRA1

12.4(20)MRA1

12.4SW

Releases prior to 12.4(15)SW6 are vulnerable, release 12.4(15)SW6 and later are not vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4T

12.4(15)T14

12.4(20)T6

12.4(24)T4

12.4(15)T14

12.4(20)T6

12.4(24)T4

12.4XA

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XB

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XC

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XD

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XE

Releases prior to 12.4(6)XE5 are vulnerable, release 12.4(6)XE5 and later are not vulnerable; first fixed in 12.4T

Releases prior to 12.4(6)XE5 are vulnerable, release 12.4(6)XE5 and later are not vulnerable; first fixed in 12.4T

12.4XF

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XG

Releases prior to 12.4(9)XG5 are vulnerable, release 12.4(9)XG5 and later are not vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XJ

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XK

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XL

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.4XM

Releases prior to 12.4(15)XM3 are vulnerable, release 12.4(15)XM3 and later are not vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XN

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.4XP

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.4XQ

Releases up to and including 12.4(15)XQ are not vulnerable.

Releases 12.4(15)XQ6 and later are not vulnerable; first fixed in 12.4T

12.4(15)XQ6; Available on 22-SEP-10

12.4XR

Not vulnerable

12.4(15)XR9

12.4(22)XR7

12.4XT

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XV

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.4XW

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XY

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4XZ

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4YA

Vulnerable; first fixed in 12.4T

Vulnerable; first fixed in 12.4T

12.4YB

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.4YD

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

Vulnerable; Contact your support organization per the instructions in Obtaining Fixed Software section of this advisory

12.4YE

Releases prior to 12.4(24)YE1 are vulnerable, release 12.4(24)YE1 and later are not vulnerable; first fixed in 12.4T

12.4(24)YE1

12.4YG

12.4(24)YG3

12.4(24)YG3

Affected 15.0-Based Releases

First Fixed Release for This Advisory

First Fixed Release for All Advisories in the September 2010 Bundle Publication

15.0M

15.0(1)M3

15.0(1)M3

15.0S

Cisco 7600 and 10000 Series routers: Not Vulnerable

Cisco ASR 1000 Series routes: Please see Cisco IOS-XE Software Availability

Cisco 7600 and 10000 Series routers: 15.0(1)S1 (available early October 2010)

Cisco ASR 1000 Series routes: Please see Cisco IOS-XE Software Availability

15.0XA

Vulnerable; first fixed in 15.1T

Vulnerable; first fixed in 15.1T

15.0XO

Not vulnerable

Not vulnerable

Affected 15.1-Based Releases

First Fixed Release for This Advisory

First Fixed Release for All Advisories in the September 2010 Bundle Publication

15.1T

15.1(1)T1

15.1(2)T0a

15.1(2)T1

15.1XB

Vulnerable; first fixed in 15.1T

Vulnerable; first fixed in 15.1T

Cisco IOS XE ソフトウェア

Cisco IOS XE Release

First Fixed Release for This Advisory

First Fixed Release for All Advisories in the September 2010 Bundle Publication

2.1.x

Not vulnerable

Not vulnerable

2.2.x

Not vulnerable

Not vulnerable

2.3.x

Not vulnerable

Not vulnerable

2.4.x

Not vulnerable

Not vulnerable

2.5.x

2.5.2

Vulnerable; migrate to 2.6.2 or later

2.6.x

2.6.1

2.6.2

3.1.xS

Not vulnerable

Not vulnerable

Cisco IOS XE と Cisco IOS リリースのマッピングについては、 『Cisco IOS XE 2』および 『Cisco IOS XE 3S Release Notes』を参照してください。

回避策

Cisco IOS デバイスが H.323 を実行しなくてもよい場合、H.323 を無効にする以外にこの脆弱性には回避策はありません。H.323 トラフィックを承認すべきではないインターフェイスでアクセス リストを適用し、戦略的にファイアウォールを設置することで、アップグレードが実行可能になるまで影響を大幅に削減できる可能性があります。

シスコでは、ネットワーク ソリューションの設計および導入を支援するための Solution Reference Network Design(SRND; ソリューション リファレンス ネットワーク デザイン)ガイド( http://www.cisco.com/en/US/netsol/ns742/networking_solutions_program_category_home.html)を提供しています。 音声セキュリティのベスト プラクティスは、次のリンクにある「Cisco Unified Communications SRND Based on Cisco Unified Communications Manager 6.x」で説明します。 http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/6x/security.html

すべての H.323 コール処理をディセーブルにするには、 この例のように、voice service voip モードで call service stop forced コマンドを実行できます。

voice service voip
 h323
  call service stop forced

注:call service stop forced コマンドは、全ての H.323 コール処理をディセーブルにします。

ネットワーク内のシスコ デバイスに適用可能なその他の緩和策については、次のリンクで、このアドバイザリの付属ドキュメント『Cisco Applied Mitigation Bulletin: Identifying and Mitigating Exploitation of the Multiple Vulnerabilities in Cisco Voice Products』にて参照できます。このドキュメントは、 http://www.cisco.com/warp/public/707/cisco-amb-20100922-voice.shtml から入手できます。

修正済みソフトウェアの入手

シスコはこれらの脆弱性に対応するための無償ソフトウェア アップデートを提供しています。ソフトウェアの導入を行う前にお客様のメンテナンス プロバイダーにご相談いただくかソフトウェアのフィーチャ セットの互換性およびお客様のネットワーク環境に特有の問題に関してご確認下さい。

お客様がインストールしたりサポートを受けたりできるのは、ご購入いただいたフィーチャ セットに対してのみとなります。そのようなソフトウェア アップグレードをインストール、ダウンロード、アクセスまたはその他の方法で使用した場合、お客様は http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html または Cisco.com ダウンロード サイト http://www.cisco.com/public/sw-center/sw-usingswc.shtml に説明のあるその他の条項に従うことに同意したことになります。

ソフトウェアのアップグレードに関し、psirt@cisco.com もしくは security-alert@cisco.com にお問い合わせいただくことはご遠慮ください。

サービス契約をご利用のお客様

サービス契約をご利用のお客様は、通常のアップデート チャネルからアップグレード ソフトウェアを入手してください。ほとんどのお客様は、シスコのワールドワイド Web サイト上の Software Center からアップグレードを入手することができます。 http://www.cisco.com

サードパーティのサポート会社をご利用のお客様

シスコ パートナー、正規販売代理店、サービス プロバイダーなど、サードパーティのサポート会社と以前に契約していたか、または現在契約しており、その会社からシスコ製品の提供または保守を受けているお客様は、該当するサポート会社に連絡し、本脆弱性に関する適切な処置について指示と支援を受けてください。

回避策の効果は、使用製品、ネットワーク トポロジー、トラフィックの性質や組織の目的などのお客様の状況に依存します。影響製品が多種多様であるため、回避策を実際に展開する前に、対象とするネットワークで適用する回避策が最適であるか、お客様のサービス プロバイダーやサポート会社にご相談ください。

サービス契約をご利用でないお客様

シスコから直接購入したがシスコのサービス契約をご利用いただいていない場合、また、サードパーティ ベンダーから購入したが修正済みソフトウェアを購入先から入手できない場合は、Cisco Technical Assistance Center(TAC)に連絡してアップグレードを入手してください。TAC の連絡先は次のとおりです。

  • +1 800 553 2447(北米内からのフリー ダイヤル)
  • +1 408 526 7209(北米以外からの有料通話)
  • 電子メール:tac@cisco.com

無償アップグレードの対象であることをご証明いただくために、製品のシリアル番号と、このお知らせの URL をご用意ください。サービス契約をご利用でないお客様に対する無償アップグレードは、TAC 経由でご要求いただく必要があります。

さまざまな言語向けの各地の電話番号、説明、電子メール アドレスなどの、この他の TAC の連絡先情報については、 http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html を参照してください。

不正利用事例と公式発表

Cisco PSIRT では、本アドバイザリに記載されている脆弱性の不正利用事例とその公表は確認しておりません。

CSCtd33567 として文書化された脆弱性は、シスコ内部でのテストによって発見されました。CSCtc73759 として文書化された脆弱性は、お客様からのサービス リクエストの解決中に発見されました。

この通知のステータス:FINAL

本アドバイザリは無保証のものとしてご提供しており、いかなる種類の保証を示唆するものでもありません。本アドバイザリの情報およびリンクの使用に関する責任の一切はそれらの使用者にあるものとします。またシスコシステムズはいつでも本ドキュメントの変更や更新を実施する権利を有します。

後述する情報配信の URL を省略し、本アドバイザリの記述内容に関して、単独の転載や意訳を実施した場合には、事実誤認ないし重要な情報の欠落を含む統制不可能な情報の伝搬が行われる可能性があります。

情報配信

本アドバイザリは、次のシスコのワールドワイド Web サイト上に掲載されます。

http://www.cisco.com/warp/public/707/cisco-sa-2010922-h323.shtml

ワールドワイド Web 以外にも、次の電子メールおよび Usenet ニュースの受信者向けに、この通知のテキスト版が Cisco PSIRT PGP キーによるクリア署名つきで投稿されています。

  • cust-security-announce@cisco.com
  • first-bulletins@lists.first.org
  • bugtraq@securityfocus.com
  • vulnwatch@vulnwatch.org
  • cisco@spot.colorado.edu
  • cisco-nsp@puck.nether.net
  • full-disclosure@lists.grok.org.uk
  • comp.dcom.sys.cisco@newsgate.cisco.com

このアドバイザリに関する今後の更新は、いかなるものもシスコのワールドワイド Web サイトに掲載される予定です。 しかしながら、前述のメーリング リストもしくはニュースグループに対し積極的に配信されるとは限りません。この問題に関心があるお客様は上記 URL にて最新情報をご確認いただくことをお勧めいたします。

更新履歴

Revision 1.2

2011-March-10

Revised Software Versions and Fixes to indicate that 12.2SRE is first fixed in 12.2(33)SRE1, that 12.2SRD is vulnerable and first fixed in 12.2SRE, and that 12.2SRC is vulnerable and first fixed in 12.2SRE.

Revision 1.1

2010-September-23

Revised the Exploitation and Public Announcements section to indicate that one vulnerability was discovered during work on a customer service request.

Revision 1.0

2010-September-22

Initial public release.

シスコ セキュリティ手順

シスコ製品におけるセキュリティの脆弱性の報告、セキュリティ事故に関する支援、およびシスコからセキュリティ情報を入手するための登録方法について詳しく知るには、シスコ ワールドワイド Web サイトの http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html にアクセスしてください。このページには、シスコのセキュリティ通知に関してメディアが問い合わせる際の指示が掲載されています。すべてのシスコ セキュリティ アドバイザリは http://www.cisco.com/go/psirt/ で確認することができます。