#VU37971 Input validation error in MediaWiki and Debian Linux - CVE-2017-8815

Vulnerability identifier: #VU37971

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-8815

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MediaWiki
Web applications / CMS
Debian Linux
Operating systems & Components / Operating system

Vendor: MediaWiki.org
Debian

Description

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

The language converter in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows attribute injection attacks via glossary rules.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MediaWiki: 1.28.0 - 1.29.1

Debian Linux: 1.28.0 - 9.0

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External links
https://www.securitytracker.com/id/1039812
https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html
https://www.debian.org/security/2017/dsa-4036

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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.