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CVE-2026-45673
MEDIUM(6.8)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
Risk Signal Score22/100 — NIEDRIG
- CVSS 6.8 — Mittel
EPSS-Score
0%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
6.8
Technische Schwere
Beschreibung
Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty's DNS resolver uses a predictable PRNG for generating DNS transaction IDs and defaults to a static UDP source port. This combination reduces the entropy of DNS queries, enabling DNS Cache Poisoning (Kaminsky attack). Versions 4.1.135.Final and 4.2.15.Final patch the issue.
GitHub Advisories
GHSA-xmv7-r254-6q78MEDIUM
Netty: DNS Cache Poisoning due to Predictable PRNG and Default Static Source Port
maven/io.netty:netty-resolver-dns→ 4.2.15.Final
GitHub Advisory