CVE-2022-41943 : Security Advisory and Response

A security vulnerability has been identified in Sourcegraph that could allow an attacker to execute arbitrary commands on Gitserver. This CVE has been assigned a base score of 9, indicating a critical severity level.

Understanding CVE-2022-41943

Sourcegraph, a code intelligence platform, was impacted by incorrect default permissions that enabled the execution of arbitrary commands on Gitserver. The issue has been addressed in version 4.1.0.

What is CVE-2022-41943?

The vulnerability in Sourcegraph allowed site admins to execute arbitrary commands on Gitserver due to an experimental feature called

customGitFetch

, which has now been disabled by default.

The Impact of CVE-2022-41943

The impact of this CVE is critical, with a base severity score of 9. Attackers exploiting this vulnerability could execute arbitrary commands on Gitserver, compromising the integrity and confidentiality of the system.

Technical Details of CVE-2022-41943

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability stemmed from incorrect default permissions in Sourcegraph that allowed for the execution of arbitrary commands on Gitserver when the

customGitFetch

feature was enabled.

Affected Systems and Versions

The vulnerability affects Sourcegraph versions prior to 4.1.0, where the

customGitFetch

feature could be abused to execute unauthorized commands on Gitserver.

Exploitation Mechanism

Attackers with site admin privileges could leverage the experimental

customGitFetch

feature to execute arbitrary commands on Gitserver, leading to unauthorized actions.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-41943, immediate steps should be taken to secure affected systems and prevent potential exploitation.

Immediate Steps to Take

Update Sourcegraph to version 4.1.0 or later to address the vulnerability. Disable the

customGitFetch

feature to prevent further exploitation.

Long-Term Security Practices

Implement strong access controls and regularly review and update permission settings to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates from Sourcegraph and promptly apply patches to address any known vulnerabilities and enhance the overall security posture.