Information disclosure in MediaWiki - CVE-2019-16738
Published: October 19, 2019
Vulnerability identifier: #VU21941
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-16738
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to Special:Redirect allows information disclosure of suppressed usernames via a User ID Lookup. A remote non-authenticated attacker can gain unauthorized access to sensitive information.
Affected software
MediaWiki
mediawiki (Debian package)
mediawiki
Fedora
mediawiki (Debian package)
mediawiki
Fedora
How to mitigate CVE-2019-16738
Install updates from vendor's website.
MediaWiki - addressed in versions 1.31.4, 1.32.4, 1.33.1
mediawiki (Debian package) - addressed in versions 1:1.27.7-1~deb9u2, 1:1.31.4-1~deb10u1
mediawiki - addressed in versions 1.32.4-1.fc30, 1.32.4-1.fc31
mediawiki (Debian package) - addressed in versions 1:1.27.7-1~deb9u2, 1:1.31.4-1~deb10u1
mediawiki - addressed in versions 1.32.4-1.fc30, 1.32.4-1.fc31