Stored cross-site scripting in MediaWiki - CVE-2017-0372
Published: April 29, 2017 / Updated: September 14, 2018
Vulnerability identifier: #VU7286
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:A/U:Clear
CVE-ID: CVE-2017-0372
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: MediaWiki.org
Affected software:
MediaWiki
MediaWiki
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data within the SyntaxHighlight_GeSHi extension. A remote attacker can create a specially crafted page with XSS exploit, trick the victim to visit it and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
How to mitigate CVE-2017-0372
Update to version 1.27.3 or 1.28.2.