GNU Libmicrohttpd: Buffer Overflow Vulnerability — GLSA 202311-08

A buffer overflow vulnerability has been discovered in GNU Libmicrohttpd.

Affected packages

Background

GNU libmicrohttpd is a small C library that makes it easy to run an HTTP server as part of another application. GNU Libmicrohttpd is free software and part of the GNU project.

Description

A buffer overflow vulnerability has been discovered in GNU Libmicrohttpd. Please review the CVE identifier referenced below for details.

Impact

A missing bounds check in the post_process_urlencoded function leads to a buffer overflow, allowing a remote attacker to write arbitrary data in an application that uses libmicrohttpd. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Workaround

There is no known workaround at this time.

Resolution

 # emerge --sync
 # emerge --ask --oneshot --verbose ">net-libs/libmicrohttpd-0.9.70"
 

References

• CVE-2021-3466

Release date
November 25, 2023

Latest revision
November 25, 2023: 1

Severity
high

Exploitable
remote

Bugzilla entries

• 778296