GLSA 202311-08: GNU Libmicrohttpd: Buffer Overflow Vulnerability

http://security.gentoo.org/

Severity:	high
Title:	GNU Libmicrohttpd: Buffer Overflow Vulnerability
Date:	11/25/2023
Bugs:	#778296
ID:	202311-08

Synopsis

A buffer overflow vulnerability has been discovered in GNU Libmicrohttpd.

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.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-libs/libmicrohttpd	== 0.9.70	> 0.9.70	All supported architectures

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

All GNU Libmicrohttpd users should upgrade to the latest version:

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

References

CVE-2021-3466

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202311-08.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.