CVE-2019-12634 : Exploit Details and Defense Strategies

A security weakness in the web-based management interface of Cisco Unified Computing System Director has been identified, potentially leading to a denial of service (DoS) situation.

Understanding CVE-2019-12634

This CVE pertains to a vulnerability in Cisco Integrated Management Controller (IMC) Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data.

What is CVE-2019-12634?

The vulnerability allows an unauthorized remote attacker to disrupt system functioning, causing a DoS situation due to the absence of authentication verification during an API call.

The Impact of CVE-2019-12634

Attack Complexity: Low
Attack Vector: Network
Availability Impact: High
Base Score: 8.6 (High Severity)
Scope: Changed
Exploitation could result in the log off of all authenticated users, disrupting active sessions.

Technical Details of CVE-2019-12634

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from the lack of authentication verification during an API call, allowing unauthorized remote attackers to disrupt system functionality.

Affected Systems and Versions

Product: Cisco Unified Computing System Director
Vendor: Cisco
Versions Affected: < 6.7.3.0 (unspecified/custom)

Exploitation Mechanism

An attacker sends a request to the impacted system, causing the log off of all authenticated users and disrupting active sessions.

Mitigation and Prevention

Protecting systems from CVE-2019-12634 is crucial to prevent potential DoS attacks.

Immediate Steps to Take

Apply vendor-provided patches promptly.
Monitor network traffic for any suspicious activity.
Implement strong network access controls.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security assessments and penetration testing.
Educate users on best security practices.

Patching and Updates

Cisco has released patches to address this vulnerability.