CVE-2020-3128 : Security Advisory and Response

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

Understanding CVE-2020-3128

Multiple vulnerabilities in Cisco Webex Network Recording Player for Microsoft Windows and Cisco Webex Player for Microsoft Windows could allow an attacker to execute arbitrary code on an affected system.

What is CVE-2020-3128?

The vulnerabilities are a result of insufficient validation of certain elements within a Webex recording stored in the Advanced Recording Format (ARF) or the Webex Recording Format (WRF). An attacker could exploit these vulnerabilities by sending a malicious ARF or WRF file to a user through a link or email attachment.

The Impact of CVE-2020-3128

Attackers could execute arbitrary code on the affected system with the privileges of the targeted user.

Technical Details of CVE-2020-3128

Vulnerability Description

The vulnerabilities in Cisco Webex Network Recording Player and Cisco Webex Player allow for arbitrary code execution due to insufficient validation of elements within Webex recordings.

Affected Systems and Versions

Product: Cisco WebEx WRF Player
Vendor: Cisco
Versions: Unspecified

Exploitation Mechanism

Attackers can exploit the vulnerabilities by convincing users to open a malicious ARF or WRF file, leading to arbitrary code execution.

Mitigation and Prevention

Immediate Steps to Take

Update Cisco Webex Network Recording Player and Cisco Webex Player to the latest versions.
Be cautious when opening files from unknown or untrusted sources.

Long-Term Security Practices

Regularly update software and security patches.
Educate users on identifying and avoiding phishing attempts.

Patching and Updates

Apply security patches provided by Cisco to address the vulnerabilities.