Cisco Security Advisory
Cisco Jabber and Webex Client Software Shared File Manipulation Vulnerability
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CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:X/RL:X/RC:X
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A vulnerability in Cisco Jabber and Cisco Webex (formerly Teams) could allow an unauthenticated, remote attacker to manipulate file names within the messaging interface.
The vulnerability exists because the affected software mishandles character rendering. An attacker could exploit this vulnerability by sharing a file within the application interface. A successful exploit could allow the attacker to modify how the shared file name displays within the interface, which could allow the attacker to conduct phishing or spoofing attacks.
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-webex-teams-7ZMcXG99
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Vulnerable Products
At the time of publication, this vulnerability affected the following Cisco products:
- Webex Teams releases earlier than Release 40.12.0.17293
- Jabber releases earlier than 12.9.6 and 14.0.1
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.
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There are no workarounds that address this vulnerability.
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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 following Cisco products contained the fix for this vulnerability:
- Webex (formerly Teams) releases 40.12.0.17293 and later
- Jabber releases 12.9.6 and later and 14.0.1 and later
See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
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Cisco would like to thank Hou JingYi of Qihoo 360 CERT for reporting this vulnerability.
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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 1.1 Added Cisco Jabber as a vulnerable product. Title, Summary, Vulnerable Products, and Fixed Software Final 2021-JUN-16 1.0 Initial public release. - Final 2021-JAN-13
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