Vulnerability Report

CVE-2020-29007

RCE

Title: Mediawiki Score RCE

RCE

Proof Of Concept

PoC Available for CVE-2020-29007

CWE Category CWE-94
Published Date Apr 15, 2023
Modified Date Feb 06, 2025
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
24.53%

Vulnerability Summary

CVE-2020-29007: 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.

Impacted Vendors

M
mediawiki 1

Reference Links

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 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
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
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:H/I:H/A:H
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity CRITICAL
9.8
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:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-29007 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/seqred-s-a/cve-2020-29007
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

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

Affected Stack

No specific products linked.