CVE-2021-3466
9.8 CRITICALA flaw was found in libmicrohttpd
Published: 2021-03-25 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 9.8 CRITICAL
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-120
Affected products
| Vendor | Product |
|---|---|
| fedoraproject | enterprise_linux, fedora, libmicrohttpd |
| gnu | enterprise_linux, fedora, libmicrohttpd |
| redhat | enterprise_linux, fedora, libmicrohttpd |
Description
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-3466
- [Patch]https://bugzilla.redhat.com/show_bug.cgi?id=1939127
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4334XJNDJPYQNFE6S3S2KUJJ7TMHYCWL/
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/75HDMREKITMGPGE62NP7KE62ZJVLETXN/
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K5NEPVGP3L2CZHLZ4UB44PEILHKPDBOG/
- [Other]https://security.gentoo.org/glsa/202311-08
- [Patch]https://bugzilla.redhat.com/show_bug.cgi?id=1939127
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4334XJNDJPYQNFE6S3S2KUJJ7TMHYCWL/
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/75HDMREKITMGPGE62NP7KE62ZJVLETXN/
- [Other]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K5NEPVGP3L2CZHLZ4UB44PEILHKPDBOG/
- [Other]https://security.gentoo.org/glsa/202311-08
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