Summary

• Multiple vulnerabilities in Cisco SD-WAN products could allow an authenticated attacker to perform command injection attacks against an affected device, which could allow the attacker to take certain actions with root privileges on the 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-sdwan-cmdinjm-9QMSmgcn

Affected Products

• Vulnerable Products

  These vulnerabilities affect the following Cisco products if they are running a vulnerable release of Cisco SD-WAN Software:

  • SD-WAN vBond Orchestrator Software
  • SD-WAN vEdge Cloud Routers
  • SD-WAN vEdge Routers
  • SD-WAN vManage Software
  • SD-WAN vSmart Controller Software

  For information about which Cisco software releases are vulnerable, see the Fixed Software section of this advisory.

  Products Confirmed Not Vulnerable

  Only products listed in the Vulnerable Products section of this advisory are known to be affected by these vulnerabilities.

  Cisco has confirmed that these vulnerabilities do not affect Cisco IOS XE SD-WAN Software.

Details

• The vulnerabilities are not dependent on one another; exploitation of one of the vulnerabilities is not required to exploit another vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerabilities.

  Details about the vulnerabilities are as follows:

  CVE-2021-1299: Cisco SD-WAN vManage Command Injection Vulnerability

  A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to execute arbitrary commands as the root user on an affected system.

  This vulnerability is due to improper input validation of user-supplied input to the device template configuration. An attacker could exploit this vulnerability by submitting crafted input to the device template configuration. A successful exploit could allow the attacker to gain root-level access to the affected system.

  This vulnerability affects only the Cisco SD-WAN vManage product.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvu28387
  CVE ID: CVE-2021-1299
  Security Impact Rating (SIR): Critical
  CVSS Base Score: 9.9
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

  CVE-2021-1261: Cisco SD-WAN CLI Command Injection Vulnerability

  A vulnerability in the CLI utility tcpdump of Cisco SD-WAN Software could allow an authenticated, local attacker with read-only credentials to inject arbitrary commands that could allow the attacker to obtain root privileges.

  This vulnerability is due to insufficient validation of user-supplied input to the tcpdump command. An attacker could exploit this vulnerability by authenticating with a lower-privileged user account via the CLI of an affected device and submitting crafted input to the affected commands. A successful exploit could allow the attacker to execute arbitrary commands on the device with root privileges.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvi59639
  CVE ID: CVE-2021-1261
  Security Impact Rating (SIR): High
  CVSS Base Score: 7.8
  CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  CVE-2021-1260: Cisco SD-WAN CLI Command Injection Vulnerability

  A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker with read-only credentials to inject arbitrary commands that could allow the attacker to obtain root privileges and read, write, and delete files of the underlying file system of an affected device.

  This vulnerability is due to insufficient validation of user-supplied input on the CLI. An attacker could exploit this vulnerability by authenticating with read-only privileges via the CLI of an affected device and submitting crafted input to the affected commands. A successful exploit could allow the attacker to execute arbitrary commands on the device with root privileges.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvi59635
  CVE ID: CVE-2021-1260
  Security Impact Rating (SIR): High
  CVSS Base Score: 7.1
  CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

  CVE-2021-1263: Cisco SD-WAN CLI Command Injection Vulnerability

  A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker with read-only credentials to inject arbitrary commands that could allow the attacker to obtain root privileges and read, write, and delete files of the underlying file system of an affected device.

  This vulnerability is due to insufficient validation of user-supplied input on the CLI. An attacker could exploit this vulnerability by authenticating with read-only privileges via the CLI of an affected device and submitting crafted input to the affected commands. A successful exploit could allow the attacker to execute arbitrary commands on the device with root privileges.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvu28443
  CVE ID: CVE-2021-1263
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 6.1
  CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

  CVE-2021-1262: Cisco SD-WAN CLI Command Injection Vulnerability

  A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker with read-only credentials to inject arbitrary commands that could allow the attacker to obtain root privileges and read files from the underlying file system of an affected device.

  This vulnerability is due to insufficient validation of user-supplied input on the CLI. An attacker could exploit this vulnerability by authenticating with read-only privileges via the CLI of an affected device and submitting crafted input to the affected commands. A successful exploit could allow the attacker to execute arbitrary commands on the device with root privileges.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvi69982
  CVE ID: CVE-2021-1262
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 5.5
  CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

  CVE-2021-1298: Cisco SD-WAN vManage Command Injection Vulnerability

  A vulnerability in the vAnalytics feature of the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to execute arbitrary commands as the root user on an affected system.

  This vulnerability is due to improper input validation of user-supplied input to the SSO configuration. An attacker could exploit this by submitting crafted input to the SSO configuration. A successful exploit could allow the attacker to gain root-level access to the system.

  The vAnalytics feature of Cisco SD-WAN vManage Software must be enabled for this vulnerability to be exploited.

  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

  Bug ID(s): CSCvm26011
  CVE ID: CVE-2021-1298
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 5.3
  CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Workarounds

• There are no workarounds that address these vulnerabilities.

Fixed Software

• Cisco has released free software updates that address the vulnerabilities described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
  https://www.cisco.com/c/en/us/products/end-user-license-agreement.html

  Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.

  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.

  Customers Without Service Contracts

  Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

  Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.

  Fixed Releases

  Customers are advised to upgrade to an appropriate fixed software release as indicated in the following table(s). To ensure a complete upgrade solution, consider that this advisory is part of a collection that includes the following advisories:

  • cisco-sa-sdwan-abyp-TnGFHrS: Cisco SD-WAN vManage Authorization Bypass Vulnerabilities
  • cisco-sa-sdwan-bufovulns-B5NrSHbj: Cisco SD-WAN Buffer Overflow Vulnerabilities
  • cisco-sa-sdwan-cmdinjm-9QMSmgcn: Cisco SD-WAN Command Injection Vulnerabilities
  • cisco-sa-sdwan-dosmulti-48jJuEUP: Cisco SD-WAN Denial of Service Vulnerabilities

   

  Cisco SD-WAN Release	First Fixed Release for These Vulnerabilities	First Fixed Release for All Vulnerabilities Described in the Collection of Advisories
  Earlier than 18.3	Migrate to a fixed release.	Migrate to a fixed release.
  18.3	Migrate to a fixed release.	Migrate to a fixed release.
  18.4	Migrate to a fixed release.	Migrate to a fixed release.
  19.2	19.2.4	Migrate to a fixed release.
  19.3	Migrate to a fixed release.	Migrate to a fixed release.
  20.1	20.1.2	Migrate to a fixed release.
  20.3	20.3.2	20.3.2
  20.4	20.4.1	20.4.1

Exploitation and Public Announcements

• The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.

Source

• The following vulnerabilities were found during the resolution of a Cisco TAC support case: CVE-2021-1260 and CVE-2021-1261.

  The following vulnerabilities were found during internal security testing:

  • James Spadaro of Cisco: CVE-2021-1262
  • Joseph Connor of Cisco: CVE-2021-1263
  • Andrew Kim of Cisco: CVE-2021-1298
  • Alex Lumsden of Cisco: CVE-2021-1299

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-cmdinjm-9QMSmgcn

Revision History

• Version	Description	Section	Status	Date
  1.1	Updated Fixed Releases.	Fixed Software	Final	2021-FEB-02
  1.0	Initial public release.	—	Final	2021-JAN-20

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