5.3Mittel
CVE-2026-116542Netty netty-tcnative before 2.0.84.Final SNI Hostname Spoofing via Modified UTF-8 Decoding
Beschreibung
Netty netty-tcnative before 2.0.84.Final contains an SNI hostname spoofing vulnerability that allows remote unauthenticated clients to alter hostnames via JNI NewStringUTF decoding. Attackers can send overlong encodings like 0xC0 0x80 in the ClientHello server_name to confuse SNI-based certificate selection, access decisions, and logging.
Schwachstellentyp (CWE):
CWE-176
Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.
Betroffene Produkte und Versionen
| Hersteller | Produkt | Versionen | |
|---|---|---|---|
| netty | netty-tcnative | < 2.0.84.Final | |
| netty | netty-tcnative-boringssl-static | < 2.0.84.Final |
Referenzen und Patches
- GitHub Security Advisory (GHSA-2784-hxmm-4hgf) vendor-advisory
- Patch Commit patch
- https://github.com/netty/netty-tcnative/blob/netty-tcnative-parent-2.0.83.Final/openssl-dynamic/src/main/c/ss… technical-description
- netty-tcnative netty-tcnative-parent-2.0.84.Final Release Notes release-notes
- https://github.com/netty/netty-tcnative product
- VulnCheck Advisory: Netty netty-tcnative before 2.0.84.Final SNI Hostname Spoofing via Modified UTF-8 Decoding third-party-advisory