CVE-2021-30155: An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2

Medium severity · published Apr 9, 2021

CVE-2021-30155

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2

4.3

CVSS

1.2%

EPSS

On KEV

Description

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. ContentModelChange does not check if a user has correct permissions to create and set the content model of a nonexistent page.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack vector

Network

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

None

Integrity

Low

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.2% · higher than 68% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Debian Linux · Debian

9.0; 10.0 · source: NVD

Fedora · Fedoraproject

33; 34 · source: NVD

Mediawiki · Mediawiki

before 1.31.12; 1.32.0 before 1.35.2 · source: NVD

Affected product

Debian Linux

Debian

All Debian Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-30155

CVE.org

https://www.cve.org/CVERecord?id=CVE-2021-30155

Mailing List

https://lists.debian.org/debian-lts-announce/2021/05/msg00003.html

Mailing List

https://lists.debian.org/debian-lts-announce/2021/05/msg00006.html

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/

lists.fedoraproject.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/

Exploit

https://phabricator.wikimedia.org/T270988

Third Party Advisory

https://security.gentoo.org/glsa/202107-40