Cross-site scripting in MediaWiki - CVE-2016-6333
Published: April 20, 2017 / Updated: July 1, 2017
Vulnerability identifier: #VU7284
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2016-6333
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MediaWiki.org
Affected software:
MediaWiki
MediaWiki
Detailed vulnerability description
Vulnerability allows a remote attacker to perform Cross-site scripting attacks.
An input validation error exists in the CSS user subpage preview feature in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 when processing edit box in Special:MyPage/common.css. A remote attacker can trick the victim to follow a specially specially crafted link and execute arbitrary HTML and script code in victim's browser in security 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-2016-6333
The vendor has issued the following versions to address this vulnerability: 1.23.15, 1.26.4, 1.27.1