CVE-2021-40905 : What You Need to Know

Check out the details of CVE-2021-40905 and understand its implications on the CheckMK Enterprise Edition.

Understanding CVE-2021-40905

Explore the specifics of the CVE-2021-40905 vulnerability affecting CheckMK Enterprise Edition.

What is CVE-2021-40905?

The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) lacks proper sanitization during the upload of ".mkp" files, allowing remote code execution. Successful exploitation demands access to the web management interface with valid credentials or a hijacked administrator session.

The Impact of CVE-2021-40905

The vulnerability enables remote code execution in CheckMK Enterprise Edition, potentially leading to unauthorized system access and data compromise.

Technical Details of CVE-2021-40905

Delve into the technical aspects of CVE-2021-40905 to understand its workings.

Vulnerability Description

The web management console of CheckMK Enterprise Edition fails to adequately sanitize the uploading of ".mkp" files, leading to a critical remote code execution risk.

Affected Systems and Versions

Product: CheckMK Enterprise Edition
Versions: 1.5.0 to 2.0.0p9
Status: Affected

Exploitation Mechanism

To exploit CVE-2021-40905, an attacker needs:

Access to the web management interface
Valid credentials or a compromised administrator session
Ability to upload ".mkp" files

Mitigation and Prevention

Discover the steps to mitigate and prevent the CVE-2021-40905 vulnerability.

Immediate Steps to Take

Upgrade to a fixed version that addresses the vulnerability
Restrict network access to the web management interface
Monitor and analyze file uploads for suspicious activity

Long-Term Security Practices

Conduct regular security audits and assessments
Implement strict access controls and authentication mechanisms

Patching and Updates

Apply vendor-supplied patches promptly
Stay informed about security updates and follow best practices for system hardening