Executive Summary

Informations
Name CVE-2020-11077 First vendor Publication 2020-05-22
Vendor Cve Last vendor Modification 2023-11-07

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11077

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 1
Os 1
Os 2

Sources (Detail)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
Source Url
CONFIRM https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm
MISC https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020...
MLIST https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html
SUSE http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html

Alert History

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Date Informations
2023-11-07 21:37:16
  • Multiple Updates
2023-03-03 17:27:44
  • Multiple Updates
2021-05-04 13:44:57
  • Multiple Updates
2021-04-22 02:56:51
  • Multiple Updates
2020-10-07 17:22:49
  • Multiple Updates
2020-09-26 05:22:45
  • Multiple Updates
2020-07-19 09:22:46
  • Multiple Updates
2020-07-19 00:22:45
  • Multiple Updates
2020-05-28 21:23:07
  • Multiple Updates
2020-05-23 02:41:34
  • First insertion