Vulnerability identifier: #VU14825

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0503

CWE-ID: CWE-264

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 value of "$wgRateLimits" overrides setting for "newbie" users. A remote authenticated attacker can bypass intended limits.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

MediaWiki: 1.31.0, 1.30.0, 1.29.0 - 1.29.2, 1.27.0 - 1.27.4

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External links
http://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 user via the Internet.

Is there known malware, which exploits this vulnerability?

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