Sourcegraph gitserver sshCommand RCE
Description
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.
Author(s)
- Altelus1
- Spencer McIntyre
Platform
Linux,Unix
Architectures
cmd, x86, x64
Development
Module Options
To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':
msf > use exploit/linux/http/sourcegraph_gitserver_sshcmd
msf exploit(sourcegraph_gitserver_sshcmd) > show targets
...targets...
msf exploit(sourcegraph_gitserver_sshcmd) > set TARGET < target-id >
msf exploit(sourcegraph_gitserver_sshcmd) > show options
...show and set options...
msf exploit(sourcegraph_gitserver_sshcmd) > exploit
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