CVE-2021-45098
suricata - security update
7.5
HIGH
CVSS 3.1
EPSS 0.40%
描述
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.
如何修補 CVE-2021-45098
要修補 CVE-2021-45098,請將受影響套件升級到下列已修補版本。
- —升級至 1:6.0.1-3+deb11u1 或更新版本
- —升級至 1:6.0.1-3+deb11u1 或更新版本
CVE-2021-45098 正在被利用嗎?
低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 1:6.0.1-3+deb11u1
- from 0, < 1:6.0.1-3+deb11u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |