SUSE SLED15 / SLES15 Security Update : netty, netty-tcnative (SUSE-SU-2026:2308-1)

medium Nessus Plugin ID 321020

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2308-1 advisory.

This update for netty, netty-tcnative fixes the following issues

- CVE-2026-41417: missing validations leads to HTTP request smuggling and RTSP request injection via start-line injection in `DefaultHttpRequest.setUri()` (bsc#1264350).
- CVE-2026-42578: HTTP Header Injection via HttpProxyHandler Disabled Validation in Netty (bsc#1265243).
- CVE-2026-42579: DNS codec does not enforce RFC 1035 domain name constraints during either encoding or decoding (bsc#1265272).
- CVE-2026-42580: chunk size parser silently overflows int and enables request smuggling attacks (bsc#1265273).
- CVE-2026-42581: TE+CL header coexistence in HTTP/1.0 requests bypasses smuggling sanitization (bsc#1265277).
- CVE-2026-42583: resource exhaustion and possible denial of service via `Lz4FrameDecoder` (bsc#1265279).
- CVE-2026-42584: improper handling of inbound responses in `HttpClientCodec` can lead to response desynchronization (bsc#1265280).
- CVE-2026-42585: Netty is an asynchronous, event-driven network application framework (bsc#1265292).
- CVE-2026-42586: CRLF Injection in Netty Redis Codec Encoder (bsc#1265245).
- CVE-2026-42587: HttpContentDecompressor maxAllocation bypass via Content-Encoding: br/zstd/snappy enables decompression bomb DoS (bsc#1265246).
- CVE-2026-44248: Netty is an asynchronous, event-driven network application framework (bsc#1265294).
- CVE-2026-42582: HTTP/3 QPACK literal unbounded allocation (bsc#1265318).

Changes for netty:

- Upgrade to upstream version 4.1.133

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected netty, netty-javadoc and / or netty-tcnative packages.

Plugin Details

Severity: Medium

ID: 321020

File Name: suse_SU-2026-2308-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 6/14/2026

Updated: 6/14/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-42581

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 2.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-42578

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:netty-tcnative, p-cpe:/a:novell:suse_linux:netty-javadoc, p-cpe:/a:novell:suse_linux:netty

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/9/2026

Vulnerability Publication Date: 5/5/2026

Reference Information

CVE: CVE-2026-41417, CVE-2026-42578, CVE-2026-42579, CVE-2026-42580, CVE-2026-42581, CVE-2026-42582, CVE-2026-42583, CVE-2026-42584, CVE-2026-42585, CVE-2026-42586, CVE-2026-42587, CVE-2026-44248

SuSE: SUSE-SU-2026:2308-1

Detections

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