CVE-2021-45098

Name
CVE-2021-45098
Description
An issue was discovered in Suricata before 6.0.4. It is possible to bypass/evade any HTTP-based signature by faking an RST TCP packet with random TCP options of the md5header from the client side. After the three-way handshake, it's possible to inject an RST ACK with a random TCP md5header option. Then, the client can send an HTTP GET request with a forbidden URL. The server will ignore the RST ACK and send the response HTTP packet for the client's request. These packets will not trigger a Suricata reject action.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://github.com/OISF/suricata/releases
MISC https://redmine.openinfosecfoundation.org/issues/4710
MISC https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942
MISC https://github.com/OISF/suricata/commit/50e2b973eeec7172991bf8f544ab06fb782b97df
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2025/03/msg00029.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:* suricata >= None < 6.0.4

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
suricata edge-community 6.0.4-r0 Steve McMaster <code@mcmaster.io> fixed
suricata edge-community 6.0.3-r0 Steve McMaster <code@mcmaster.io> possibly vulnerable
suricata 3.22-community 6.0.4-r0 None fixed
suricata 3.22-community 6.0.3-r0 None possibly vulnerable
suricata 3.21-community 6.0.4-r0 None fixed
suricata 3.20-community 6.0.4-r0 None fixed
suricata 3.19-community 6.0.4-r0 None fixed
suricata 3.18-community 6.0.4-r0 None fixed
suricata 3.17-community 6.0.4-r0 None fixed