CVE-2023-3550

high

Description

Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.

References

https://www.mediawiki.org/wiki/MediaWiki/

https://www.debian.org/security/2023/dsa-5520

https://lists.fedoraproject.org/archives/list/[email protected]/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/

https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html

https://fluidattacks.com/advisories/blondie/

Details

Source: Mitre, NVD

Published: 2023-09-25

Updated: 2024-06-10

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 7.3

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Severity: High