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

Vulnerability

Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows contain multiple vulnerabilities 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 with the affected software, triggers arbitrary code execution. The affected versions are those prior to the fixed releases provided in the Cisco security advisory [1].

Exploitation

Exploitation requires an attacker to send a malicious ARF or WRF file to a user, typically via a link or email attachment, and persuade the user to open the file with the affected Cisco Webex player on a Windows system. No special network position or authentication is needed beyond standard user interaction. The user must manually open the file, making it a user-assisted attack [1].

Impact

Successful exploitation allows the attacker to execute arbitrary code on the affected system with the privileges of the targeted user. This could lead to full compromise of the user's data, installation of malware, or further propagation within the network, depending on the user's permissions [1].

Mitigation

Cisco has released free software updates to address these vulnerabilities. Customers should upgrade to the fixed versions specified in the Cisco security advisory [1]. No workarounds are mentioned; users should avoid opening ARF/WRF files from untrusted sources until patched. Fixed releases are available for download through the Cisco support portal for customers with valid licenses [1].