CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, при специфични условия, без вход и без действие от потребителя.
- Експлоатация: има публичен пример за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
mediasoup is a WebRTC video conferencing system. From version 3.20.0 until 3.20.6 for the npm package and from 0.22.0 until 0.22.5 for the Rust crate, mediasoup's built-in SCTP stack authenticates state cookies using only the hardcoded msworker and 0xAD81 magic values instead of a per-instance secret and HMAC, contrary to RFC 9260 Section 5.1.3. The cookie structure and validation in worker/include/RTC/SCTP/association/StateCookie.hpp and worker/src/RTC/SCTP/association/StateCookie.cpp allow an on-path attacker targeting PlainTransport or PipeTransport with SCTP enabled and without DTLS protection to forge a COOKIE-ECHO whose packet verification tag matches the attacker-controlled localVerificationTag. The forged cookie passes StateCookie::IsMediasoupStateCookie() and Association::HandleReceivedCookieEchoChunk(), establishes an unauthorized SCTP association, and permits DataChannel message injection as a trusted peer. WebRtcTransport is not affected because its SCTP runs inside DTLS. This issue is fixed in npm version 3.20.6 and Rust crate version 0.22.5.
Засегнати продукти
- versatica mediasoup: >= 3.20.0, < 3.20.6; >= 0.22.0, < 0.22.5
Вид слабост
История
- 25 август 2026 Публикувано
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-55663
- https://nvd.nist.gov/vuln/detail/CVE-2026-55663
- https://github.com/versatica/mediasoup/security/advisories/GHSA-p7x2-g5cq-fhmq
- https://github.com/versatica/mediasoup/pull/1829
- https://github.com/versatica/mediasoup/commit/9c1a90a8f9206b965e727d134846fb42df4980a7
- https://github.com/versatica/mediasoup/releases/tag/3.20.6