GHSA-f26w-gh5m-qq77
Pion Interceptor's improper RTP padding handling allows remote crash for SFU users (DoS)
Quick fix
GHSA-f26w-gh5m-qq77 — github.com/pion/interceptor: upgrade to the fixed version with the command below.
go get github.com/pion/interceptor@v0.1.39Details
### Impact Pion Interceptor versions v0.1.36 through v0.1.38 contain a bug in a RTP packet factory that can be exploited to trigger a panic with Pion based SFU via crafted RTP packets, This only affect users that use pion/interceptor.
### Patches
Upgrade to v0.1.39 or later, which includes PR [#338](https://github.com/pion/interceptor/pull/338) which validates that: `padLen > 0 && padLen <= payloadLength` and return error on overflow, avoiding panic.
If upgrading is not possible, apply the patch from the pull request manually or drop packets whose P-bit is set but whose padLen is zero or larger than the remaining payload.
### Workarounds At the application layer, reject any RTP packet where: ``` hasPadding (P-bit field) == true && (padLen == 0 || padLen > packetLen – headerLen) ```
before passing it to Pion’s packet factories.
### References Commit fixing the bug: https://github.com/pion/interceptor/commit/fa5b35ea867389cec33a9c82fffbd459ca8958e5 Pull request: https://github.com/pion/interceptor/pull/338 Issue: https://github.com/pion/webrtc/issues/3148
Are you affected?
Enter the version of the package you're using.
Affected packages
0.1.36Fixed in: 0.1.39go get github.com/pion/interceptor@v0.1.39References
- https://github.com/pion/interceptor/security/advisories/GHSA-f26w-gh5m-qq77[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2025-49140[ADVISORY]
- https://github.com/pion/webrtc/issues/3148[WEB]
- https://github.com/pion/interceptor/pull/338[WEB]
- https://github.com/pion/interceptor/commit/fa5b35ea867389cec33a9c82fffbd459ca8958e5[WEB]
- https://github.com/pion/interceptor[PACKAGE]