The git hook feature in Gitea 1.1.0 through 1.12.5 allows for authenticated remote code execution.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-14144
• go-gitea/gitea#13058
• go-gitea/gitea@8fe8ab5
• https://docs.github.com/en/enterprise-server%402.19/admin/policies/creating-a-pre-receive-hook-script
• https://docs.github.com/en/enterprise-server@2.19/admin/policies/creating-a-pre-receive-hook-script
• https://docs.gitlab.com/ee/administration/server_hooks.html
• https://github.com/PandatiX/CVE-2021-28378
• https://github.com/PandatiX/CVE-2021-28378#notes
• https://github.com/go-gitea/gitea/releases
• https://podalirius.net/articles/exploiting-cve-2020-14144-gitea-authenticated-remote-code-execution
• https://www.exploit-db.com/exploits/49571
• https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-3-schwachstelle-in-gitea-1125-und-gogs-0122-ermoeglicht-ausfuehrung-von-code-nach-authent
• http://packetstormsecurity.com/files/162122/Gitea-Git-Hooks-Remote-Code-Execution.html