Cisco Security Advisory
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CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:X/RL:X/RC:X
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A vulnerability in the Cisco Webex Player for Webex Recording Format (WRF) files could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
An attacker could exploit this vulnerability by sending a user a link or email attachment with a malicious WRF file and persuading the user to open the file in the Cisco Webex Player. A successful exploit could cause the affected player to crash, resulting in a DoS condition.
For more information about this vulnerability, see the Details section of this security advisory.
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-20180905-webex-player-dos
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Vulnerable Products
This vulnerability affects the Cisco Webex Player that is available from Cisco Webex Meetings Suite sites. For information about affected software releases, consult the Cisco bug ID(s) at the top of this advisory.
To determine which version of the Cisco Webex Player is installed, users can open the player and choose About from the Help menu.
Note: Customers who do not receive automatic software updates may be running versions of Cisco Webex Meetings that have reached end-of-software maintenance and should contact customer support.
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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Cisco Webex Meetings Suite services are hosted multimedia conferencing solutions that are managed and maintained by Cisco Webex. The Cisco Webex Player is an application that is used to play back Webex meetings that have been recorded in WRF format by an online meeting attendee. The Cisco Webex Player can be installed only manually from the Cisco Webex site.
The Cisco Webex Player for WRF files is available only for Cisco Webex Meetings Suite (WBS31, WBS32, and WBS33) and Cisco Webex Meetings. The affected player is not available for Cisco Webex Meetings Server.
Windows, Mac OS X, and Linux versions of the Cisco Webex Player are affected by the vulnerability described in this advisory.
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There are no workarounds that address this vulnerability. However, it is possible to remove the affected Cisco Webex Player by following the software-removal procedure for the operating system. For example, in Windows, use Programs and Features to uninstall the affected players.
To remove Cisco Webex software from a system completely, use the Meeting Services Removal Tool (for Microsoft Windows users) or the Mac Webex Meeting Application Uninstaller (for Apple Mac OS X users), which are available for download from the Cisco Collaboration Help article Cisco WebEx and 3rd Party Support Utilities.
To remove Cisco Webex software from a Linux or UNIX-based system, follow the steps in the Cisco Collaboration Help article How Do I Uninstall WebEx Software on a Linux or Unix Based System?
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For information about fixed software releases, consult the Cisco bug ID(s) at the top of this advisory.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts 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.
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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 Liu Yongjun 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 1.0 Initial public release. — Final 2018-September-05
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