Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution Vulnerabilities

Vulnerability

The vulnerability resides in the Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows. The software improperly validates Advanced Recording Format (ARF) and Webex Recording Format (WRF) files, allowing an attacker to craft a malicious file that triggers arbitrary code execution. Affected versions include all releases prior to the fixed versions provided in the Cisco security advisory [1].

Exploitation

An attacker can exploit this vulnerability by sending a user a malicious ARF or WRF file via a link or email attachment and persuading the user to open the file using the affected software. No authentication is required, but user interaction is necessary. The attacker does not need any special network position beyond the ability to deliver the file to the target.

Impact

Successful exploitation allows the attacker to execute arbitrary code on the affected system with the privileges of the user running the player. This could lead to full compromise of the system, including data theft, installation of malware, or further lateral movement within the network.

Mitigation

Cisco has released free software updates that address this vulnerability. Customers should upgrade to the fixed versions as indicated in the Cisco security advisory [1]. No workarounds are available. The vulnerability is not listed on the Known Exploited Vulnerabilities (KEV) catalog as of the publication date.