Allocation of Resources Without Limits or Throttling Affecting netty package, versions <4.1.126-150200.4.34.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.08% (24th percentile)

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  • Snyk IDSNYK-SLES156-NETTY-12597311
  • published10 Sept 2025
  • disclosed9 Sept 2025

Introduced: 9 Sep 2025

CVE-2025-55163  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 netty to version 4.1.126-150200.4.34.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream netty package and not the netty package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit - which results in resource exhaustion and distributed denial of service. This issue has been patched in versions 4.1.124.Final and 4.2.4.Final.

CVSS Base Scores

version 3.1