Input validation error in MediaWiki and Debian Linux - CVE-2017-8814

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Main Vulnerability Database Vulnerabilities #VU37970

Input validation error in MediaWiki and Debian Linux - CVE-2017-8814

Published: November 15, 2017 / Updated: August 8, 2020


Vulnerability identifier: #VU37970
CSH Severity: Medium
CVSS v4.0: 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-2017-8814
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: MediaWiki.org
Debian
Affected software:
MediaWiki
Debian Linux

Detailed vulnerability 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 attackers to replace text inside tags via a rule definition followed by "a lot of junk."


How to mitigate CVE-2017-8814

Install update from vendor's website.

Sources