CVE-2020-11077
Puma Proxy Response Smuggling
Description
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.
INFO
Published Date :
May 22, 2020, 3:15 p.m.
Last Modified :
Nov. 7, 2023, 3:14 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2020-11077 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2020-11077
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-11077.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html | Mailing List Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html | Mailing List Third Party Advisory |
| https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22 | Release Notes |
| https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/ |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python Shell Dockerfile HTML Go JavaScript Ruby PHP VCL ASP.NET
Puma, CVE-2020-11076 and CVE-2020-11077
Ruby Java C Ragel Shell Dockerfile
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-11077 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-11077 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/ [No types assigned] Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/ -
Modified Analysis by [email protected]
Mar. 03, 2023
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html Mailing List, Third Party Advisory Changed Reference Type 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/blob/master/History.md#434435-and-31253126--2020-05-22 Release Notes Changed Reference Type https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm Third Party Advisory https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm Vendor Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 07, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html [No Types Assigned] -
CVE Modified by [email protected]
Sep. 25, 2020
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 19, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 18, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html [No Types Assigned] -
Initial Analysis by [email protected]
May. 28, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22 No Types Assigned https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22 Release Notes, Third Party Advisory Changed Reference Type https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm No Types Assigned https://github.com/puma/puma/security/advisories/GHSA-w64w-qqph-5gxm Third Party Advisory Added CWE NIST CWE-444 Added CPE Configuration OR *cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:* versions from (including) 3.0.0 up to (excluding) 3.12.6 *cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:* versions from (including) 4.0.0 up to (excluding) 4.3.5
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-11077 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-11077
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.34 }} -0.15%
score
0.72123
percentile