Input validation error in MediaWiki and Debian Linux - CVE-2017-8812
Published: November 15, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU37969
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-8812
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate data.
MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows remote attackers to inject > (greater than) characters via the id attribute of a headline.
Affected software
MediaWiki
Debian Linux
Arch Linux
Debian Linux
Arch Linux
How to mitigate CVE-2017-8812
Install update from vendor's website.