Cisco Security Advisory
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CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:X/RL:X/RC:X
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Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to read arbitrary files or conduct a server-side request forgery (SSRF) attack through an affected device. To exploit these vulnerabilities, an attacker must have valid Administrator credentials on the affected device.
For more information about these vulnerabilities, see the Details section of this advisory.
Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xxe-inj-696OZTCm
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Vulnerable Products
At the time of publication, these vulnerabilities affected Cisco ISE.
For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory are known to be affected by these vulnerabilities.
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The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit the other vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerability.
Note: These vulnerabilities can be exploited only by valid and authorized users of the Cisco ISE system. As a best practice, customers can restrict console access and admin web access. To configure the access restrictions, choose Administration > System > Admin Access > Settings > Access > IP Access.
Details about the vulnerabilities are as follows:
CVE-2023-20173: Cisco Identity Services Engine XML External Entity Injection Vulnerability
A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to read arbitrary files on the underlying operating system of an affected device. To exploit this vulnerability, an attacker must have valid Administrator level privileges on the affected device.
This vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by uploading a crafted XML file that contains references to external entities. A successful exploit could allow the attacker to retrieve files from the local system, resulting in the disclosure of confidential information.
Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
Bug ID(s): CSCwd93719
CVE ID: CVE-2023-20173
Security Impact Rating (SIR): Medium
CVSS Base Score: 4.9
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NCVE-2023-20174: Cisco Identity Services Engine XML External Entity Injection Vulnerability
A vulnerability in the web-based management interface of Cisco ISE could allow an authenticated, remote attacker to conduct a server-side request forgery (SSRF) attack through an affected device. To exploit this vulnerability, an attacker must have valid Administrator level privileges on the affected device.
This vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by uploading a crafted XML file that contains references to external entities. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected system.
Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
Bug ID(s): CSCwd38137
CVE ID: CVE-2023-20174
Security Impact Rating (SIR): Medium
CVSS Base Score: 4.1
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
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There are no workarounds that address these vulnerabilities.
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When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Fixed Releases
At the time of publication, the release information in the following table(s) was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerabilities that are described in this advisory and which release included the fix for these vulnerabilities.
Cisco ISE Release First Fixed Release 2.7 and earlier Migrate to a fixed release. 3.0 3.0P8 (Jul 2023) 3.1 3.1P7 (Jun 2023) 3.2 3.2P2 For instructions on upgrading a device, see the Upgrade Guides located on the Cisco Identity Service Engine support page.
The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.
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The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
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CVE-2023-20173: This vulnerability was found during internal security testing by Arthur Vidineyev of the Cisco Advanced Security Initiatives Group (ASIG).
CVE-2023-20174: This vulnerability was found during internal security testing by Evan Pickard of the Cisco ASIG.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial public release. — Final 2023-MAY-17
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