Impact

The malicious user is able to update a crafted config file into repository's .git directory with to gain SSH access to the server. All installations with repository upload enabled (default) are affected.

Patches

Repository file updates are prohibited to its .git directory. Users should upgrade to 0.12.8 or the latest 0.13.0+dev.

Workarounds

N/A

References

N/A

For more information

If you have any questions or comments about this advisory, please post on #6555.

References

• GHSA-56j7-2pm8-rgmx
• gogs/gogs#6555
• gogs/gogs#6986
• https://github.com/gogs/gogs/blob/f36eeedbf89328ee70cc3a2e239f6314f9021f58/conf/app.ini#L127-L129
• https://github.com/gogs/gogs/releases/tag/v0.12.8
• https://nvd.nist.gov/vuln/detail/CVE-2021-32546
• https://github.com/gogs/gogs/releases