CVE-2019-15283 : Security Advisory and Response

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

Understanding CVE-2019-15283

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-2019-15283?

The vulnerabilities in Cisco Webex Network Recording Player and Cisco Webex Player for Microsoft Windows stem from inadequate validation of specific components within Webex recordings saved in the Advanced Recording Format (ARF) or the Webex Recording Format (WRF). Attackers could exploit these weaknesses by sending malicious ARF or WRF files to users and convincing them to open the files using the affected software, enabling the execution of arbitrary code on the compromised system.

The Impact of CVE-2019-15283

If successfully exploited, unauthorized individuals could execute arbitrary code on affected systems, operating with the privileges of the targeted user. The vulnerabilities pose a high risk to confidentiality, integrity, and availability of the compromised systems.

Technical Details of CVE-2019-15283

Vulnerability Description

The vulnerabilities allow attackers to execute arbitrary code on compromised systems due to insufficient validation of elements within Webex recordings in ARF or WRF formats.

Affected Systems and Versions

Product: Cisco WebEx WRF Player
Vendor: Cisco
Versions: Not applicable

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

Avoid opening ARF or WRF files from untrusted sources.
Update the affected software to the latest version.
Implement email and web filtering to block malicious files.

Long-Term Security Practices

Educate users on recognizing phishing attempts and suspicious emails.
Regularly update and patch software to address security vulnerabilities.

Patching and Updates

Refer to the vendor's security advisory for patches and updates.