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CVE-2022-23642

Status Candidate

Overview

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.

Related Files

Sourcegraph gitserver sshCommand Remote Command Execution
Posted Jul 13, 2022
Authored by Spencer McIntyre, Altelus1 | Site metasploit.com

A vulnerability exists within Sourcegraph's gitserver component that allows a remote attacker to execute arbitrary OS commands by modifying the core.sshCommand value within the git configuration. This command can then be triggered on demand by executing a git push operation. The vulnerability was patched by introducing a feature flag in version 3.37.0. This flag must be enabled for the protections to be in place which filter the commands that are able to be executed through the git exec REST API.

tags | exploit, remote, arbitrary
advisories | CVE-2022-23642
SHA-256 | 0594780e2115769789da65e1767a8d75b4d0f855a6666360d2fca232bded2a21
Download | Favorite | View
Sourcegraph Gitserver 3.36.3 Remote Code Execution
Posted Jun 20, 2022
Authored by Altelus

Sourcegraph Gitserver version 3.36.3 suffers from a remote code execution vulnerability.

tags | exploit, remote, code execution
advisories | CVE-2022-23642
SHA-256 | ee3b7d37bfe4486bd0f3cce9798a27ebb2b45cf81818291f4acb0d35f4d13d82
Download | Favorite | View
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