Vulnerability Report

CVE-2020-11077

Title: Puma

Other

Proof Of Concept

No public PoC currently indexed for CVE-2020-11077.

CWE Category CWE-444
Published Date May 22, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 6.8 CVSS v3.1
Exploit Probability (EPSS)
0.82%

Vulnerability Summary

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.

Impacted Vendors

P
psywerks 1
P
puma 1

Reference Links

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22 https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/ http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22 https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.8
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
5.0
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-11077 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N

Affected Stack

No specific products linked.