Description

In Puma (RubyGem) before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-encoding header. The problem has been fixed in Puma 3.12.5 and Puma 4.3.4.

INFO

Published Date :

May 22, 2020, 3:15 p.m.

Last Modified :

Nov. 21, 2024, 4:56 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2020-11076 has a 6 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-2020-11076 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.

ID Vendor Product Action
1 Fedoraproject fedora
1 Debian debian_linux
1 Puma puma
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-2020-11076.

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/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd Patch
https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5h Third Party 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/
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/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd Patch
https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5h Third Party 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

Updated: 5 months, 3 weeks ago
8 stars 1 fork 1 watcher
Born at : June 21, 2022, 7:45 a.m. This repo has been linked 943 different CVEs too.

None

Python Shell Dockerfile HTML Go JavaScript Ruby PHP VCL ASP.NET

Updated: 1 month, 3 weeks ago
24 stars 4 fork 4 watcher
Born at : March 23, 2022, 11:55 a.m. This repo has been linked 13 different CVEs too.

None

Updated: 2 months, 2 weeks ago
34 stars 3 fork 3 watcher
Born at : March 12, 2021, 12:22 p.m. This repo has been linked 1063 different CVEs too.

None

Updated: 3 months ago
19 stars 10 fork 10 watcher
Born at : Jan. 2, 2021, 10:19 p.m. This repo has been linked 1052 different CVEs too.

None

Updated: 3 weeks, 5 days ago
86 stars 33 fork 33 watcher
Born at : Oct. 2, 2020, 2:49 p.m. This repo has been linked 1113 different CVEs too.

Puma, CVE-2020-11076 and CVE-2020-11077

Ruby Java C Ragel Shell Dockerfile

Updated: 4 years, 7 months ago
0 stars 0 fork 0 watcher
Born at : May 21, 2020, 10:55 a.m. This repo has been linked 2 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-11076 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-11076 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html
    Added Reference https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22
    Added Reference https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd
    Added Reference https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5h
    Added Reference https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/
  • 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/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd Patch, Third Party Advisory https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd Patch
    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:*:*:*:*:*:*:*
  • 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. 27, 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/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd No Types Assigned https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd Patch, Third Party Advisory
    Changed Reference Type https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5h No Types Assigned https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5h 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
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-11076 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-2020-11076 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.24 }} -0.14%

score

0.61304

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability