CVE-2021-43797
HTTP request smuggling in netty
描述
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final.
如何修補 CVE-2021-43797
要修補 CVE-2021-43797,請將受影響套件升級到下列已修補版本。
- —未列出修補版本
- —升級至 4.1.71.Final 或更新版本
- —未列出修補版本
CVE-2021-43797 正在被利用嗎?
低 — EPSS 為 2.7%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0
- >= 4.0.0, < 4.1.71.Final
- from 0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |