Permissions, Privileges, and Access Controls in MediaWiki - CVE-2019-19709
Published: December 28, 2019
Vulnerability identifier: #VU23832
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-19709
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability allows attackers to bypass the Title_blacklist protection mechanism by starting with an arbitrary title, establishing a non-resolvable redirect for the associated page, and using redirect=1 in the action API when editing that page.
Affected software
MediaWiki
mediawiki (Debian package)
mediawiki (Debian package)
How to mitigate CVE-2019-19709
Install updates from vendor's website.
MediaWiki - update to 1.33.2
mediawiki (Debian package) - addressed in versions 1:1.27.7-1~deb9u3, 1:1.31.6-1~deb10u1
mediawiki (Debian package) - addressed in versions 1:1.27.7-1~deb9u3, 1:1.31.6-1~deb10u1