CVE-2023-28320 - CVE House
Back to Database
Status published Unknown CVE-2023-28320

A denial of service vulnerability exists in curl <v8.1.0 in...

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-28320

Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

https://github.com/curl/curl
Vulnerable Versions:
Fixed in 8.1.0

Timeline

Official Publish: May 26th, 2023
Last Modified: January 15th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)