netty/netty-incubator-codec-quic · Security
Netty QUIC hash collision DoS attack
- GHSA ID
- GHSA-hqqc-jr88-p6x2
- CVE ID
- CVE-2025-29908
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS v3
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
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).
CWEs
- CWE-407 · Inefficient Algorithmic Complexity
References
- https://github.com/netty/netty-incubator-codec-quic/security/advisories/GHSA-hqqc-jr88-p6x2 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2025-29908 ↗
- https://github.com/netty/netty-incubator-codec-quic/commit/e059bd9b78723f8b035e0c547e42ce263f03461c ↗
- https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory ↗
- https://github.com/advisories/GHSA-hqqc-jr88-p6x2 ↗