Asymmetric Resource Consumption (Amplification) Affecting nemo package, versions <1.23.0-r13


Severity

Recommended
low

Based on default assessment until relevant scores are available.

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  • Snyk IDSNYK-CHAINGUARDLATEST-NEMO-9519395
  • published26 Mar 2025
  • disclosed21 Mar 2025

Introduced: 21 Mar 2025

NewCVE-2025-30204  (opens in a new tab)
CWE-405  (opens in a new tab)

How to fix?

Upgrade Chainguard nemo to version 1.23.0-r13 or higher.

NVD Description

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

golang-jwt is a Go implementation of JSON Web Tokens. Prior to 5.2.2 and 4.5.2, the function parse.ParseUnverified splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request whose Authorization header consists of Bearer followed by many period characters, a call to that function incurs allocations to the tune of O(n) bytes (where n stands for the length of the function's argument), with a constant factor of about 16. This issue is fixed in 5.2.2 and 4.5.2.

CVSS Base Scores

version 3.1