CVE-2021-45098

Katalog CVE

CVSS 7.5 · High EPSS 2,0%

Kerentanan pada oisf suricata, debian linux. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

16 Desember 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator

EPSS (30 hari)

2,0% peluang dieksploitasi; lebih tinggi dari 79,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942 release notes · advisory vendor
• https://redmine.openinfosecfoundation.org/issues/4710 exploit · issue tracking · patch · advisory vendor
• https://github.com/OISF/suricata/commit/50e2b973eeec7172991bf8f544ab06fb782b97df patch · advisory pihak ketiga
• https://github.com/OISF/suricata/releases release notes · advisory pihak ketiga
• https://lists.debian.org/debian-lts-announce/2025/03/msg00029.html