Headline
Gentoo Linux Security Advisory 202311-08
Gentoo Linux Security Advisory 202311-8 - A buffer overflow vulnerability has been discovered in GNU Libmicrohttpd. Versions greater than 0.9.70 are affected.
Gentoo Linux Security Advisory GLSA 202311-08
https://security.gentoo.org/
Severity: High
Title: GNU Libmicrohttpd: Buffer Overflow Vulnerability
Date: November 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
net-libs/libmicrohttpd = 0.9.70 > 0.9.70
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
[ 1 ] CVE-2021-3466
https://nvd.nist.gov/vuln/detail/CVE-2021-3466
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202311-08
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
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
Copyright 2023 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5
Related news
A flaw was found in libmicrohttpd. 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. Only version 0.9.70 is vulnerable.