CVE-2019-1640 : What You Need to Know

Cisco Webex Network Recording Player Arbitrary Code Execution Vulnerabilities

Understanding CVE-2019-1640

This CVE involves a security flaw in the Cisco Webex Network Recording Player and the Cisco Webex Player for Microsoft Windows, potentially allowing unauthorized individuals to execute commands on affected systems.

What is CVE-2019-1640?

The vulnerability arises from improper validation of Advanced Recording Format (ARF) and Webex Recording Format (WRF) files within the affected software. Attackers can exploit this flaw by tricking users into opening malicious ARF or WRF files, enabling them to execute unauthorized commands.

The Impact of CVE-2019-1640

The vulnerability has a CVSS base score of 7.8, indicating a high severity level. It poses a significant risk to confidentiality, integrity, and availability, with no privileges required for exploitation.

Technical Details of CVE-2019-1640

Vulnerability Description

The flaw allows attackers to execute arbitrary code on affected systems by sending malicious ARF or WRF files and persuading users to open them with the affected software.

Affected Systems and Versions

Product: Cisco WebEx WRF Player
Vendor: Cisco
Versions: Not applicable (n/a)

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Availability Impact: High
User Interaction: Required
Scope: Unchanged
Vector String: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Mitigation and Prevention

Immediate Steps to Take

Avoid opening ARF or WRF files from untrusted sources.
Update the affected software to the latest version.

Long-Term Security Practices

Educate users on safe email and file attachment handling.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Regularly check for security advisories from Cisco and apply patches promptly.