CVE-2017-8810

Name	CVE-2017-8810
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DSA-4036-1
NVD severity	medium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mediawiki (PTS)	stretch	1:1.27.5-1~deb9u1	fixed
	stretch (security)	1:1.27.7-1~deb9u1	fixed
	bullseye, sid, buster	1:1.31.2-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin
mediawiki	source	(unstable)	1:1.27.4-1	medium
mediawiki	source	stretch	1:1.27.4-1~deb9u1	medium	DSA-4036-1
mediawiki	source	wheezy	(unfixed)	end-of-life

Notes

[wheezy] - mediawiki <end-of-life> (Not supported in wheezy LTS)
https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.html
https://phabricator.wikimedia.org/T134100