module

Sourcegraph gitserver sshCommand RCE

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Disclosed
2022-02-18
Created
2022-07-16

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.

Authors

Altelus1
Spencer McIntyre

Platform

Linux,Unix

Architectures

cmd, x86, x64

References

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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