Summary

• Multiple vulnerabilities in the web engine of Cisco Telepresence CE Software and RoomOS Software could allow a remote attacker to cause a denial of service (DoS) condition, redirect users to an attacker controlled destination or view sensitive data on an 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-ROS-DOS-X7H7XhkK

Affected Products

• Vulnerable Products

  aThis vulnerbility affects Cisco RoomOS Software in Cloud-Aware On-Premises operation, which is cloud based, and Cisco TelePresence CE Software if they are running the vulnerable releases.

  Products Confirmed Not Vulnerable

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

Details

• Vulnerability 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.

  Cisco Collaboration Endpoint Software Denial of Service Vulnerability

  A vulnerability in the web engine feature of Cisco Telepresence CE Software and RoomOS Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition of an affected device.

  This vulnerability is due to insufficient neutralization of URIs. An attacker could exploit this vulnerability by using debug URIs in the web engine. A successful exploit could allow the attacker simulate a process crash resulting in a DoS of the device.

  Bug ID(s): CSCvw12003
  CVE ID: CVE-2022-20764
  Security Impact Rating (SIR): High
  CVSS Base Score: 7.7
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

  Cisco Collaboration Endpoint Software Information Disclosure Vulnerability

  A vulnerability in the web engine feature of Cisco Telepresence CE Software and RoomOS Software could allow an authenticated, remote attacker to view sensitive data on the affected device.

  This vulnerability is due to insufficient neutralization of URIs. An attacker could exploit this vulnerability by using debug URIs in the web engine. A successful exploit could allow the attacker view sensitive information regarding the affected device.

  Bug ID(s): CSCvw11997
  CVE ID: CVE-2022-20792
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 4.3
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

  Cisco Collaboration Endpoint Software Redirection Vulnerability

  A vulnerability in the web engine feature of Cisco Telepresence CE Software and RoomOS Software could allow an unauthenticated, remote attacker to redirect users to an attacker controlled destination.

  This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by providing a crafted redirection URL. A successful exploit could allow the attacker to redirect users to an attacker controlled destination.

  Bug ID(s): CSCvw12005
  CVE ID: CVE-2022-20794
  Security Impact Rating (SIR): Medium
  CVSS Base Score: 4.7
  CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/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 with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.

  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.

  The Cisco Support and Downloads page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.

  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

  In the following table(s), the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability described in this advisory and the first release that includes the fix for this vulnerability. Customers are advised to upgrade to an appropriate fixed software release as indicated in this section.

  Cisco TelePresence CE Software Release	First Fixed Release
  Earlier than 9	Migrate to a fixed release.
  9	9.15.0.11
  10	10.8.2.5

  Cisco has addressed this vulnerability in Cisco RoomOS, which is cloud based. No user action is required. Customers can determine the current remediation status or software version by using the Help function in the service GUI. Customers who need additional information are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

  Cisco RoomOS Software	First Fixed Release
  Earlier than RoomOS May 2021	RoomOS May 2021

  The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.

Exploitation and Public Announcements

• The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Source

• These vulnerabilities were found during internal security testing.

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ROS-DOS-X7H7XhkK

Revision History

• Version	Description	Section	Status	Date
  1.1	Updated fixed release information for CVE-2022-20764.	Fixed Releases	Final	2022-MAY-06
  1.0	Initial public release.	-	Final	2022-MAY-04

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