PT-2021-20628 · Unknown · Libmicrohttpd

Pedro Sampaio · Published 2021-03-25 · Updated 2023-11-25 · CVE-2021-3466

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: libmicrohttpd version 0.9.70

Description: A flaw was found in libmicrohttpd, where a missing bounds check in the post process urlencoded function leads to a buffer overflow. This allows a remote attacker to write arbitrary data in an application that uses libmicrohttpd, posing a threat to data confidentiality and integrity, as well as system availability.

Recommendations: For version 0.9.70, update to a version that fixes the buffer overflow issue in the post process urlencoded function to prevent remote attackers from writing arbitrary data. As a temporary workaround, consider restricting access to applications that use libmicrohttpd until a patch is available.

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2021-3466

Affected Products

Libmicrohttpd

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2021-3466 · Security Note
• https://osv.dev/vulnerability/CVE-2021-3466 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1939127 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-3466 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4334XJNDJPYQNFE6S3S2KUJJ7TMHYCWL · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K5NEPVGP3L2CZHLZ4UB44PEILHKPDBOG · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/75HDMREKITMGPGE62NP7KE62ZJVLETXN · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-3466 · Vendor Advisory
• https://security.gentoo.org/glsa/202311-08 · Vendor Advisory
• https://t.me/cvenotify/61152 · Telegram Post
• https://t.me/cvenotify/24329 · Telegram Post