9.8 - CVE-2020-29007

Executive Summary

Informations
Name	CVE-2020-29007	First vendor Publication	2023-04-15
Vendor	Cve	Last vendor Modification	2023-04-26

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score	9.8
Base Score	9.8	Environmental Score	9.8
impact SubScore	5.9	Temporal Score	9.8
Exploitabality Sub Score	3.9

Attack Vector	Network	Attack Complexity	Low
Privileges Required	None	User Interaction	None
Scope	Unchanged	Confidentiality Impact	High
Integrity Impact	High	Availability Impact	High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

The Score extension through 0.3.0 for MediaWiki has a remote code execution vulnerability due to improper sandboxing of the GNU LilyPond executable. This allows any user with an ability to edit articles (potentially including unauthenticated anonymous users) to execute arbitrary Scheme or shell code by using crafted {{Image data to generate musical scores containing malicious code.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-29007

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-94	Failure to Control Generation of Code ('Code Injection')

Sources (Detail)

Source	Url
MISC	https://github.com/seqred-s-a/cve-2020-29007 https://phabricator.wikimedia.org/T257062 https://seqred.pl/en/cve-2020-29007-remote-code-execution-in-mediawiki-score/ https://www.mediawiki.org/wiki/Extension:Score https://www.mediawiki.org/wiki/Extension:Score/2021_security_advisory