CVE-2025-29908

MEDIUM5.3

Netty QUIC hash collision DoS attack

Published Mar 31, 2025

Modified 11 months ago

Details

Netty QUIC codec is a QUIC codec for netty which makes use of quiche. An issue was discovered in the codec. A hash collision vulnerability (in the hash map used to manage connections) allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs). This vulnerability is fixed in 0.0.71.Final.

References

WEB

https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory

WEB

https://github.com/netty/netty-incubator-codec-quic/commit/e059bd9b78723f8b035e0c547e42ce263f03461c

WEB

https://github.com/netty/netty-incubator-codec-quic/security/advisories/GHSA-hqqc-jr88-p6x2

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2025-29908

CVSS Analysis

CVSS v3.1

5.3