Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities

Vulnerability

In Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows, the software does not properly validate Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. This vulnerability exists in versions prior to the fixed releases mentioned in the Cisco advisory [1]. An attacker can craft a malicious file that, when parsed by the player, triggers the flaw.

Exploitation

An attacker must convince a user to open a malicious ARF or WRF file, typically delivered via a link or email attachment. No additional authentication or network position is required beyond the user's interaction. The attacker does not need any special privileges on the target system; the exploit occurs within the context of the user running the vulnerable software [1].

Impact

Successful exploitation allows an attacker to execute arbitrary code on the affected system with the same privileges as the user executing the Webex player. This can lead to full compromise of the system, including data theft, installation of malware, or further lateral movement within the network [1].

Mitigation

Cisco has released fixed software updates to address this vulnerability. Users should upgrade to the affected versions specified in the Cisco Security Advisory [1]. There is no workaround available for this issue. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog as of the advisory date.