Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerability

Vulnerability

The vulnerability exists in Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows due to improper validation of Advanced Recording Format (ARF) and Webex Recording Format (WRF) files. An attacker can craft a malicious ARF or WRF file that, when opened by the affected software, triggers arbitrary code execution. The affected software versions include those prior to the fixed releases provided by Cisco [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 with the affected software on the local system. No authentication or special network position is required; the attack relies on user interaction.

Impact

Successful exploitation allows the attacker to execute arbitrary code on the affected system with the privileges of the user running the software. This can 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 to address this vulnerability [1]. Users should upgrade to the latest fixed version of Cisco Webex Network Recording Player or Cisco Webex Player for Windows. No workarounds are documented; applying the patch is the recommended mitigation.