CVE-2021-3466

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.

Score

CVSS 3.1 9.8 Critical

Status

Modified - secalert@redhat.com

Published

2021-03-25

Last modified

2024-08-03

Weaknesses

CWE-120

Affected products

• Fedora (Fedoraproject)
• Libmicrohttpd (Gnu)
• Enterprise Linux (Redhat)

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1939127
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4334XJNDJPYQNFE6S3S2KU…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/75HDMREKITMGPGE62NP7KE…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K5NEPVGP3L2CZHLZ4UB44P…
• https://security.gentoo.org/glsa/202311-08