DEBIAN-CVE-2021-45098
- Source
- https://security-tracker.debian.org/tracker/CVE-2021-45098
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-45098.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2021-45098
- Upstream
- Published
- 2021-12-16T05:15:08Z
- Modified
- 2025-09-30T05:16:30.983767Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:11 / suricata
Package
- Name
- suricata
- Purl
- pkg:deb/debian/suricata?arch=source
Debian:12 / suricata
Package
- Name
- suricata
- Purl
- pkg:deb/debian/suricata?arch=source
Debian:13 / suricata
Package
- Name
- suricata
- Purl
- pkg:deb/debian/suricata?arch=source
Debian:14 / suricata
Package
- Name
- suricata
- Purl
- pkg:deb/debian/suricata?arch=source