CVE-2021-29472
Composer Mercurial Code Execution Vulnerability
Description
Composer is a dependency manager for PHP. URLs for Mercurial repositories in the root composer.json and package source download URLs are not sanitized correctly. Specifically crafted URL values allow code to be executed in the HgDriver if hg/Mercurial is installed on the system. The impact to Composer users directly is limited as the composer.json file is typically under their own control and source download URLs can only be supplied by third party Composer repositories they explicitly trust to download and execute source code from, e.g. Composer plugins. The main impact is to services passing user input to Composer, including Packagist.org and Private Packagist. This allowed users to trigger remote code execution. The vulnerability has been patched on Packagist.org and Private Packagist within 12h of receiving the initial vulnerability report and based on a review of logs, to the best of our knowledge, was not abused by anyone. Other services/tools using VcsRepository/VcsDriver or derivatives may also be vulnerable and should upgrade their composer/composer dependency immediately. Versions 1.10.22 and 2.0.13 include patches for this issue.
INFO
Published Date :
April 27, 2021, 9:15 p.m.
Last Modified :
Nov. 7, 2023, 3:32 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2021-29472 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-2021-29472
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-2021-29472.
| URL | Resource |
|---|---|
| https://blog.sonarsource.com/php-supply-chain-attack-on-composer/ | Exploit Third Party Advisory |
| https://getcomposer.org/ | Vendor Advisory |
| https://github.com/composer/composer/security/advisories/GHSA-h5h8-pc6h-jvvx | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/05/msg00009.html | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FAQUAMGO4Q4BLNZ2OH4CXQD7UK4IO2GE/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KN3DMFH42BJW45VT6FYF2RXKC26D6VC2/ | |
| https://www.debian.org/security/2021/dsa-4907 | Third Party Advisory |
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
https://twitch.tv/mdisec
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-29472 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-29472 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/FAQUAMGO4Q4BLNZ2OH4CXQD7UK4IO2GE/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KN3DMFH42BJW45VT6FYF2RXKC26D6VC2/ [No types assigned] Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/KN3DMFH42BJW45VT6FYF2RXKC26D6VC2/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/FAQUAMGO4Q4BLNZ2OH4CXQD7UK4IO2GE/ -
Modified Analysis by [email protected]
Dec. 13, 2022
Action Type Old Value New Value Changed Reference Type https://blog.sonarsource.com/php-supply-chain-attack-on-composer/ No Types Assigned https://blog.sonarsource.com/php-supply-chain-attack-on-composer/ Exploit, Third Party Advisory -
CVE Modified by [email protected]
Aug. 02, 2022
Action Type Old Value New Value Added Reference https://blog.sonarsource.com/php-supply-chain-attack-on-composer/ [No Types Assigned] -
Modified Analysis by [email protected]
Jun. 04, 2022
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/05/msg00009.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/05/msg00009.html Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FAQUAMGO4Q4BLNZ2OH4CXQD7UK4IO2GE/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FAQUAMGO4Q4BLNZ2OH4CXQD7UK4IO2GE/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/KN3DMFH42BJW45VT6FYF2RXKC26D6VC2/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/KN3DMFH42BJW45VT6FYF2RXKC26D6VC2/ Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 26, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/KN3DMFH42BJW45VT6FYF2RXKC26D6VC2/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FAQUAMGO4Q4BLNZ2OH4CXQD7UK4IO2GE/ [No Types Assigned] -
CVE Modified by [email protected]
May. 12, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/05/msg00009.html [No Types Assigned] -
Initial Analysis by [email protected]
May. 07, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://getcomposer.org/ No Types Assigned https://getcomposer.org/ Vendor Advisory Changed Reference Type https://github.com/composer/composer/security/advisories/GHSA-h5h8-pc6h-jvvx No Types Assigned https://github.com/composer/composer/security/advisories/GHSA-h5h8-pc6h-jvvx Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4907 No Types Assigned https://www.debian.org/security/2021/dsa-4907 Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:getcomposer:composer:*:*:*:*:*:*:*:* versions up to (excluding) 1.10.22 *cpe:2.3:a:getcomposer:composer:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (excluding) 2.0.13 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 30, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4907 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-29472 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-2021-29472
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
11.75 }} 3.10%
score
0.95310
percentile