CVE-2021-45098
Summary
| CVE | CVE-2021-45098 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-12-16 05:15:00 UTC |
| Updated | 2022-01-04 16:48:00 UTC |
| 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. |
Risk And Classification
Problem Types: NVD-CWE-noinfo
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Debian | Debian Linux | 10.0 | All | All | All |
| Operating System | Debian | Debian Linux | 11.0 | All | All | All |
| Operating System | Debian | Debian Linux | 9.0 | All | All | All |
| Application | Oisf | Suricata | All | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Releases · OISF/suricata · GitHub | MISC | github.com | |
| Suricata 6.0.4 and 5.0.8 released - Announcements - Suricata | MISC | forum.suricata.io | |
| stream/tcp: handle RST with MD5 or AO header · OISF/suricata@50e2b97 · GitHub | MISC | github.com | |
| Security #4710: tcp: Bypass of Payload Detection on TCP RST with options of MD5header - Suricata - Open Information Security Foundation | MISC | redmine.openinfosecfoundation.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.