[sanic] sanic vulnerable to Path Traversal

Impact

Access to lateral directories when using app.static if using encoded %2F URLs. Parent directory traversal is not impacted.

Patches

• v20.12.7 (LTS)
• v21.12.2 (LTS)
• v22.6.1

References

https://github.com/sanic-org/sanic/issues/2478
https://github.com/sanic-org/sanic/pull/2495

For more information

If you have any questions or comments about this advisory:

• Open an issue in the community forums
• Ping us on the Discord server

References

• https://github.com/sanic-org/sanic/security/advisories/GHSA-8cw9-5hmv-77w6
• https://nvd.nist.gov/vuln/detail/CVE-2022-35920
• https://github.com/sanic-org/sanic/issues/2478
• https://github.com/sanic-org/sanic/pull/2495
• https://github.com/advisories/GHSA-8cw9-5hmv-77w6