Race Condition Affecting curl package, versions <7.88.1-10


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
2.66% (84th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-CURL-5561877
  • published18 May 2023
  • disclosed26 May 2023

Introduced: 18 May 2023

CVE-2023-28320  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Debian:unstable curl to version 7.88.1-10 or higher.

NVD Description

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

A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using alarm() and siglongjmp(). When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave.

CVSS Base Scores

version 3.1