CVE-2020-11077

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.

Link	Resource
https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22	Release Notes Third Party Advisory
https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/
https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html

Configuration 1

cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:* cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*

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Published : 2020-05-22 03:15

Updated : 2020-10-07 01:15

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NVD link : CVE-2020-11077

Mitre link : CVE-2020-11077

No products.

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')