CVE-2020-11505 : What You Need to Know

An issue was discovered in GitLab Community Edition (CE) and Enterprise Edition (EE) before 12.7.9, 12.8.x before 12.8.9, and 12.9.x before 12.9.3. This vulnerability could lead to NuGet package and file disclosure through request smuggling.

Understanding CVE-2020-11505

This CVE identifies a security vulnerability in GitLab versions prior to 12.7.9, 12.8.9, and 12.9.3 that could result in the exposure of sensitive information.

What is CVE-2020-11505?

The vulnerability in GitLab could allow a Workhorse bypass, leading to the disclosure of NuGet packages and files due to request smuggling.

The Impact of CVE-2020-11505

The vulnerability could result in the exposure of sensitive information, potentially compromising the confidentiality of NuGet packages and files stored in affected GitLab instances.

Technical Details of CVE-2020-11505

This section provides more technical insights into the vulnerability.

Vulnerability Description

The issue in GitLab versions before 12.7.9, 12.8.9, and 12.9.3 allows a Workhorse bypass, enabling attackers to disclose NuGet packages and files through request smuggling.

Affected Systems and Versions

GitLab Community Edition (CE) before 12.7.9
GitLab Enterprise Edition (EE) before 12.8.9
GitLab versions 12.8.x before 12.8.9
GitLab versions 12.9.x before 12.9.3

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating requests to GitLab, bypassing the Workhorse component and gaining unauthorized access to sensitive NuGet packages and files.

Mitigation and Prevention

Protecting systems from CVE-2020-11505 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update GitLab to versions 12.7.9, 12.8.9, or 12.9.3 to patch the vulnerability.
Monitor and review access logs for any suspicious activity indicating potential exploitation.

Long-Term Security Practices

Implement secure coding practices to prevent similar vulnerabilities in the future.
Regularly update and patch software to address known security issues.

Patching and Updates

Apply the latest security updates provided by GitLab to ensure the vulnerability is mitigated.