Cisco Security Advisory
Cisco Webex Player Memory Corruption Vulnerability
Click Icon to Copy Verbose Score
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
-
A vulnerability in Cisco Webex Player for Windows and MacOS could allow an attacker to cause the affected software to terminate or to gain access to memory state information that is related to the vulnerable application.
The vulnerability is due to insufficient validation of values in Webex recording files that are stored in Webex Recording Format (WRF). An attacker could exploit this vulnerability by sending a malicious WRF file to a user as a link or email attachment and then persuading the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to crash the affected software and view memory state information.
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-player-kxtkFbnR
-
Vulnerable Products
At the time of publication, this vulnerability affected Cisco Webex Player for Windows and MacOS releases earlier than Release 41.5, which are available from Cisco Webex Meetings.
See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
To determine which release of Cisco Webex Player is installed on a system, open the player and choose Help > About.
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 Webex Network Recording Player for Windows and MacOS.
-
Cisco Webex Meetings is a hosted, multimedia conferencing solution that is managed and maintained by Cisco Webex. Cisco Webex Meetings Server is a multimedia conferencing solution that customers host, manage, and maintain in their private clouds.
Cisco Webex Meetings services can be configured to allow users to store meeting recordings online and download those recordings as ARF files. These services can also be configured to allow users to record meetings directly on their local computers as WRF files.
Cisco Webex Network Recording Player is the application that is used to play back ARF files. It is available from Cisco Webex Meetings sites and Cisco Webex Meetings Server. The player can be installed manually from a user’s Cisco Webex website download page in Classic view, or from the Cisco Webex Video Recording page.
Cisco Webex Player is the application that is used to play back WRF files. It is available from Cisco Webex Meetings sites. It is not available from Cisco Webex Meetings Server. The player can be installed manually from a user’s Cisco Webex website download page in Classic view, or from the Cisco Webex Video Recording page.
-
There are no workarounds that address this vulnerability.
-
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, Cisco Webex Player releases 41.5 and later contained the fix for this vulnerability. Releases are available from the Cisco Webex Video Recording page or from corresponding Cisco Webex Meetings sites.
See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information.
-
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.
-
Cisco would like to thank Kushal Arvind Shah of Fortinet for reporting this vulnerability.
-
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.
-
Show LessVersion Description Section Status Date 1.0 Initial public release. - Final 2021-JUN-02
-
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.