CVE-2021-3466: Buffer Overflow
First published: Mon Mar 15 2021(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU libmicrohttpd | =0.9.70 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| redhat/libmicrohttpd | <0.9.71 | 0.9.71 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1939127
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4334XJNDJPYQNFE6S3S2KUJJ7TMHYCWL/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/75HDMREKITMGPGE62NP7KE62ZJVLETXN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/K5NEPVGP3L2CZHLZ4UB44PEILHKPDBOG/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4334XJNDJPYQNFE6S3S2KUJJ7TMHYCWL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K5NEPVGP3L2CZHLZ4UB44PEILHKPDBOG/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/75HDMREKITMGPGE62NP7KE62ZJVLETXN/
- https://security.gentoo.org/glsa/202311-08
- https://git.gnunet.org/libmicrohttpd.git/commit/?id=a110ae6276660bee3caab30e9ff3f12f85cf3241
- https://git.gnunet.org/libmicrohttpd.git/diff/src/microhttpd/postprocessor.c?id=a110ae6276660bee3caab30e9ff3f12f85cf3241
- https://git.gnunet.org/libmicrohttpd.git/diff/src/microhttpd/test_postprocessor.c?id=a110ae6276660bee3caab30e9ff3f12f85cf3241
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1939128
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1939129
- https://git.gnunet.org/libmicrohttpd.git/commit/?id=55f715e15e3ce66babc939b5a670bee02d4d9571
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