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

Vulnerability

Cisco Webex Network Recording Player and Webex Player for Microsoft Windows contain multiple vulnerabilities due to insufficient validation of certain elements within a Webex recording stored in the Advanced Recording Format (ARF) or Webex Recording Format (WRF). The specific flaw exists in the parsing of ARF files, where crafted data can trigger access to memory prior to initialization (an uninitialized pointer) [1][2]. Affected versions include various releases before the fixed versions provided in the Cisco advisory [1].

Exploitation

An attacker can exploit these vulnerabilities by sending a malicious ARF or WRF file to a user through a link or email attachment and persuading the user to open the file on the local system. User interaction is required; the target must visit a malicious page or open a malicious file [1][2]. No special network position or authentication is needed beyond delivering the file to the user.

Impact

A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user. This can lead to full compromise of confidentiality, integrity, and availability (CIA) of the system, as the attacker gains the ability to run code in the context of the current process [1][2].

Mitigation

Cisco has released free software updates that address the vulnerabilities [1]. Customers are advised to upgrade to the fixed versions provided in the Cisco Security Advisory. If the information is not clear, customers should contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers [1]. No workarounds are mentioned in the available references.