CVE-2010-1189: Input Validation
MediaWiki before 1.15.2 does not prevent wiki editors from linking to images from other web sites in wiki pages, which allows editors to obtain IP addresses and other information of wiki users by adding a link to an image on an attacker-controlled web site, aka "CSS validation issue."
Other sources
MediaWiki upstream has released new v1.15.2 version: http://lists.wikimedia.org/pipermail/mediawiki-announce/2010-March/000088.html
of MediaWiki fixing two security issues (from upstream announcement):
a, "A CSS validation issue was discovered which allows editors to display external images in wiki pages. This is a privacy concern on public wikis, since a malicious user may link to an image on a server they control, which would allow that attacker to gather IP addresses and other information from users of the public wiki. All sites running publicly-editable MediaWiki installations are advised to upgrade. All versions of MediaWiki (prior to this one) are affected."
CVE identifier of CVE-2010-1189 has been assigned to this.
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b, "A data leakage vulnerability was discovered in thumb.php which affects wikis which restrict access to private files using imgauth.php, or some similar scheme. All versions of MediaWiki since 1.5 are affected.
Deleting thumb.php is a suitable workaround for private wikis which do not use $wgThumbnailScriptPath or $wgLocalRepo['thumbScriptUrl']."
CVE identifier of CVE-2010-1190 has been assigned to this.
Upstream patch: http://download.wikimedia.org/mediawiki/1.15/mediawiki-1.15.2.patch.gz
References: http://secunia.com/advisories/38856/
CVE Request: http://www.openwall.com/lists/oss-security/2010/03/09/4
— Red Hat
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2010-1189?
CVE-2010-1189 is classified as a medium severity vulnerability.
How does CVE-2010-1189 affect MediaWiki users?
CVE-2010-1189 allows attackers to link to images from their own servers, potentially exposing IP addresses and other user data.
What versions of MediaWiki are affected by CVE-2010-1189?
CVE-2010-1189 affects MediaWiki versions prior to 1.15.2.
How do I fix CVE-2010-1189?
To fix CVE-2010-1189, upgrade MediaWiki to version 1.15.2 or later.
What is the nature of the attack in CVE-2010-1189?
The attack in CVE-2010-1189 exploits a CSS validation issue that allows unauthorized IP address collection.