CVE-2019-1926 Explained : Impact and Mitigation

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

Understanding CVE-2019-1926

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

What is CVE-2019-1926?

The vulnerabilities stem from insufficient validation of Advanced Recording Format (ARF) and Webex Recording Format (WRF) files, enabling attackers to run arbitrary code on compromised systems.

The Impact of CVE-2019-1926

If successfully exploited, attackers can execute arbitrary code on targeted systems with user privileges, potentially leading to severe confidentiality, integrity, and availability impacts.

Technical Details of CVE-2019-1926

Vulnerability Description

Attackers can exploit vulnerabilities in Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows by sending malicious ARF or WRF files to users.

Affected Systems and Versions

Product: Cisco WebEx WRF Player
Vendor: Cisco
Versions Affected: < 39.5.5

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Availability Impact: High
Confidentiality Impact: High
Integrity Impact: High

Mitigation and Prevention

Immediate Steps to Take

Update affected software to versions beyond 39.5.5 to mitigate the vulnerabilities.
Educate users about the risks of opening files from unknown sources.

Long-Term Security Practices

Implement email and web filtering to block suspicious file attachments.
Regularly educate users on cybersecurity best practices.

Patching and Updates

Regularly check for security updates and patches from Cisco to address known vulnerabilities.