CVE-2025-49140 – github.com/pion/interceptor

Package

Manager: go
Name: github.com/pion/interceptor
Vulnerable Version: >=0.1.36 <0.1.39

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00062 pctl0.19633

Details

Pion Interceptor's improper RTP padding handling allows remote crash for SFU users (DoS) ### 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

Metadata

Created: 2025-06-09T20:29:40Z
Modified: 2025-06-10T14:45:07Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-f26w-gh5m-qq77/GHSA-f26w-gh5m-qq77.json
CWE IDs: ["CWE-770"]
Alternative ID: GHSA-f26w-gh5m-qq77
Finding: F029
Auto approve: 1