Sourcegraph up to 4.0.x Request /list-gitolite host os command injection

Summaryinfo

A vulnerability described as critical has been identified in Sourcegraph up to 4.0.x. This issue affects some unknown processing of the file /list-gitolite of the component Request Handler. Executing a manipulation of the argument host can lead to os command injection. This vulnerability is registered as CVE-2022-41942. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Sourcegraph up to 4.0.x and classified as critical. This vulnerability affects an unknown code block of the file /list-gitolite of the component Request Handler. The manipulation of the argument host with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Sourcegraph is a code intelligence platform. In versions prior to 4.1.0 a command Injection vulnerability existed in the gitserver service, present in all Sourcegraph deployments. This vulnerability was caused by a lack of input validation on the host parameter of the `/list-gitolite` endpoint. It was possible to send a crafted request to gitserver that would execute commands inside the container. Successful exploitation requires the ability to send local requests to gitserver. The issue is patched in version 4.1.0.

The weakness was published 11/23/2022 as GHSA-pfm3-23mh-6xjp. The advisory is shared for download at github.com. This vulnerability was named CVE-2022-41942 since 09/30/2022. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 4.1.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• Sourcegraph

Version

• 4.0

Website

• Product: https://github.com/sourcegraph/sourcegraph/

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