Vulnerability · Published Feb 18, 2022 · Assigned by GitHub_M
CVE-2022-23642Code Injection in Sourcegraph
High 8.8
In plain English
A high-severity code injection in sourcegraph from sourcegraph. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 74.3% (higher than 99.5% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code.
Official description
Sourcegraph is a code search and navigation engine. Sourcegraph prior to version 3.37 is vulnerable to remote code execution in the `gitserver` service. The service acts as a git exec proxy, and fails to properly restrict calling `git config`. This allows an attacker to set the git `core.sshCommand` option, which sets git to use the specified command instead of ssh when they need to connect to a remote system. Exploitation of this vulnerability depends on how Sourcegraph is deployed. An attacker able to make HTTP requests to internal services like gitserver is able to exploit it. This issue is patched in Sourcegraph version 3.37. As a workaround, ensure that requests to gitserver are properly protected.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| sourcegraph | sourcegraph | < 3.37 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/sourcegraph/sourcegraph/security/advisories/GHSA-qcmp-fx72-q8q9 x_refsource_CONFIRM
- https://github.com/sourcegraph/sourcegraph/pull/30833 x_refsource_MISC
- http://packetstormsecurity.com/files/167506/Sourcegraph-Gitserver-3.36.3-Remote-Code-Execution.html x_refsource_MISC
- http://packetstormsecurity.com/files/167741/Sourcegraph-gitserver-sshCommand-Remote-Command-Execution.html x_refsource_MISC