Information disclosure in MediaWiki and Debian Linux - CVE-2017-8810
Published: November 15, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU37967
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-8810
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MediaWiki.org
Debian
Debian
Affected software:
MediaWiki
Debian Linux
MediaWiki
Debian Linux
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2, when a private wiki is configured, provides different error messages for failed login attempts depending on whether the username exists, which allows remote attackers to enumerate account names and conduct brute-force attacks via a series of requests.
How to mitigate CVE-2017-8810
Install update from vendor's website.