Vulnerability identifier: #VU31326

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-0368

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS

Vendor: MediaWiki.org

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

Mediawiki before 1.28.1 / 1.27.2 / 1.23.16 contains a flaw making rawHTML mode apply to system messages.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.28.0

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External links
http://lists.wikimedia.org/pipermail/mediawiki-announce/2017-April/000207.html
http://phabricator.wikimedia.org/T156184
http://security-tracker.debian.org/tracker/CVE-2017-0368

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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