Summary

• A vulnerability in the Extensible Messaging and Presence Protocol (XMPP) message processing feature of Cisco Jabber could allow an authenticated, remote attacker to manipulate the content of XMPP messages that are used by the affected application.

  This vulnerability is due to the improper handling of nested XMPP messages within requests that are sent to the Cisco Jabber client software. An attacker could exploit this vulnerability by connecting to an XMPP messaging server and sending crafted XMPP messages to an affected Jabber client. A successful exploit could allow the attacker to manipulate the content of XMPP messages, possibly allowing the attacker to cause the Jabber client application to perform unsafe actions.

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

  This advisory is available at the following link:
  https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-xmpp-Ne9SCM

Affected Products

• Vulnerable Products

  At the time of publication, this vulnerability affected Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms.

  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 this vulnerability.

  Cisco has confirmed that this vulnerability does not affect Cisco Jabber client software that is configured for either of the following modes:

  • Phone-only mode
  • Team messaging mode

Details

• Depending on client software and XMPP server configuration, an attacker may not be able to exploit this vulnerability at will. To exploit this vulnerability, the attacker must be:

  • Authenticated to an XMPP server that the affected software is using
  • Able to send XMPP messages to an affected system

Workarounds

• There are no workarounds that address this vulnerability.

Fixed Software

• 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 vulnerability that is described in this advisory and which release included the fix for this vulnerability.

  Windows Devices

  Cisco Jabber for Windows Release	First Fixed Release
  12.5 and earlier	Migrate to a fixed release.
  12.6	12.6.6
  12.7	12.7.6
  12.8	12.8.7
  12.9	12.9.7
  14.0	14.0.5
  14.1	14.1.3

  MacOS Devices

  Cisco Jabber for MacOS Release	First Fixed Release
  12.7 and earlier	Migrate to a fixed release.
  12.8	12.8.8
  12.9	12.9.8
  14.0	14.0.5
  14.1	14.1.3

  Android and iOS Devices

  Cisco Jabber for Android and iOS Release	First Fixed Release
  Earlier than 14.1	Migrate to a fixed release.
  14.1	14.1.4

  Android MAM Devices

  Cisco Jabber for Android MAM Release	First Fixed Release
  Earlier than 14.1	Migrate to a fixed Release.
  14.1	14.1.4 (Nov 2022)

  iOS MAM Devices

  Cisco Jabber for iOS MAM Release	First Fixed Release
  Earlier than 14.1	Migrate to a fixed release.
  14.1	14.1.4

  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 aware that proof-of-concept exploit code is available for the vulnerability that is described in this advisory.

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

Source

• Cisco would like to thank Ivan Fratric of Google Project Zero for reporting this vulnerability.

URL

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-xmpp-Ne9SCM

Revision History

• Version	Description	Section	Status	Date
  1.1	Proof of concept code is available publicly.	Exploitation and Public Announcments	Final	2022-OCT-19
  1.0	Initial public release.	-	Final	2022-OCT-05

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