CVE-2021-45098
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.
- Oisf Suricata
- < 6.0.4
- Fix
- Available
- CVSS 3.1
- 7.5 HIGH
- EPSS
- 1.8% (77th percentile)
- NVD status
- Modified
- Published
- 2021-12-16
No indexed exploits for CVE-2021-45098 yet
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No exploit for CVE-2021-45098 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.