CVE-2020-11077
HTTP Smuggling via Transfer-Encoding Header in Puma
描述
In Puma (RubyGem) before 4.3.5 and 3.12.6, a client could smuggle a request through a proxy, causing the proxy to send a response back to another unknown client. If the proxy uses persistent connections and the client adds another request in via HTTP pipelining, the proxy may mistake it as the first request's body. Puma, however, would see it as two requests, and when processing the second request, send back a response that the proxy does not expect. If the proxy has reused the persistent connection to Puma to send another request for a different client, the second response from the first client will be sent to the second client. This is a similar but different vulnerability from CVE-2020-11076. The problem has been fixed in Puma 3.12.6 and Puma 4.3.5.
如何修補 CVE-2020-11077
要修補 CVE-2020-11077,請將受影響套件升級到下列已修補版本。
- —升級至 4.3.6-1 或更新版本
- —升級至 3.12.6 或更新版本
CVE-2020-11077 正在被利用嗎?
低 — EPSS 為 2.8%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 4.3.6-1
- from 0, < 3.12.6
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N |