CVE-2021-33037
Incorrect Transfer-Encoding handling with HTTP/1.0
5.3
MEDIUM
CVSS 3.1
EPSS 75.4%
描述
Apache Tomcat 10.0.0 to 10.0.6, 9.0.0 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
如何修補 CVE-2021-33037
要修補 CVE-2021-33037,請將受影響套件升級到下列已修補版本。
- —升級至 8.5.67 或更新版本
- —升級至 9.0.43-2~deb11u1 或更新版本
- —升級至 10.0.7 或更新版本
CVE-2021-33037 正在被利用嗎?
可能 — EPSS 為 75.4%,屬於高被利用機率區間,建議優先修補。
受影響套件(3)
- >= 8.5.0, < 8.5.67, >= 9.0.0, < 9.0.47, >= 10.0.0, < 10.0.7
- from 0, < 9.0.43-2~deb11u1
- >= 10.0.0-M1, < 10.0.7
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |