#VU14827 Improper access control in MediaWiki - CVE-2018-0505

Vulnerability identifier: #VU14827

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-0505

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

The vulnerability allows a remote authenticated attacker to bypass certain security restrictions.

The vulnerability exists due to incorrect validation of user privileges. A remote authenticated user with privileges to change user rights can bypass certain security controls.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MediaWiki: 1.27.0 - 1.29.2, 1.30.0 - 1.31.0

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External links
https://lists.wikimedia.org/pipermail/mediawiki-announce/2018-September/000223.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.