GHSA-F26W-GH5M-QQ77

Vulnerability from github – Published: 2025-06-09 20:29 – Updated: 2025-06-10 14:45
VLAI
Summary
Pion Interceptor's improper RTP padding handling allows remote crash for SFU users (DoS)
Details

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 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

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/pion/interceptor"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.1.36"
            },
            {
              "fixed": "0.1.39"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-49140"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-09T20:29:40Z",
    "nvd_published_at": "2025-06-09T22:15:22Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nPion 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.\n\n### Patches\n\nUpgrade to v0.1.39 or later, which includes PR [#338](https://github.com/pion/interceptor/pull/338) which validates that: `padLen \u003e 0 \u0026\u0026 padLen \u003c= payloadLength` and return error  on overflow, avoiding panic.\n\nIf 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.\n\n### Workarounds\nAt the application layer, reject any RTP packet where:\n```\nhasPadding (P-bit field) == true  \u0026\u0026  (padLen == 0 || padLen \u003e packetLen \u2013 headerLen)\n```\n\nbefore passing it to Pion\u2019s packet factories.\n\n### References\nCommit fixing the bug: https://github.com/pion/interceptor/commit/fa5b35ea867389cec33a9c82fffbd459ca8958e5\nPull request: https://github.com/pion/interceptor/pull/338\nIssue: https://github.com/pion/webrtc/issues/3148",
  "id": "GHSA-f26w-gh5m-qq77",
  "modified": "2025-06-10T14:45:07Z",
  "published": "2025-06-09T20:29:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pion/interceptor/security/advisories/GHSA-f26w-gh5m-qq77"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49140"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pion/webrtc/issues/3148"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pion/interceptor/pull/338"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pion/interceptor/commit/fa5b35ea867389cec33a9c82fffbd459ca8958e5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pion/interceptor"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Pion Interceptor\u0027s improper RTP padding handling allows remote crash for SFU users (DoS)"
}



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