CVE-2023-28320

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.

Affected products

Alt Linux, Debian, Apple Macos, Red Os, Suse, Curl

Haxx Curl

< 8.1.0

Fix

Available

CVSS 3.1

5.9 MEDIUM

EPSS

2.7% (84th percentile)

Weakness

CWE-400, CWE-362

NVD status

Modified

Published

2023-05-26

No exploit for CVE-2023-28320 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.