CVE-2011-1578: XSS
Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.3, when Internet Explorer 6 or earlier is used, allows remote attackers to inject arbitrary web script or HTML via an uploaded file accessed with a dangerous extension such as .html at the end of the query string, in conjunction with a modified URI path that has a %2E sequence in place of the . (dot) character.
Other sources
Mediawiki 1.16.3 was released [1] to correct three security flaws:
Masato Kinugawa discovered a cross-site scripting (XSS) issue, which affects Internet Explorer clients only, and only version 6 and earlier. Web server configuration changes are required to fix this issue. Upgrading MediaWiki will only be sufficient for people who use Apache with AllowOverride enabled. (CVE-2011-1578)
Wikipedia user Suffusion of Yellow discovered a CSS validation error in the wikitext parser. This is an XSS issue for Internet Explorer clients, and a privacy loss issue for other clients since it allows the embedding of arbitrary remote images. (CVE-2011-1579)
MediaWiki developer Happy-Melon discovered that the transwiki import feature neglected to perform access control checks on form submission. The transwiki import feature is disabled by default. If it is enabled, it allows wiki pages to be copied from a remote wiki listed in $wgImportSources. The issue means that any user can trigger such an import to occur. (CVE-2011-1580)
[1] http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000096.html
— Red Hat
Affected Software
Remediation
Patch Available
Patch Available
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Event History
Frequently Asked Questions
What is the severity of CVE-2011-1578?
The CVE-2011-1578 vulnerability is classified as a medium severity cross-site scripting (XSS) issue affecting MediaWiki.
How do I fix CVE-2011-1578?
To fix CVE-2011-1578, upgrade MediaWiki to version 1.16.3 or later, as this version addresses the vulnerability.
What versions of MediaWiki are affected by CVE-2011-1578?
CVE-2011-1578 affects MediaWiki versions prior to 1.16.3, including all versions from 1.1.0 to 1.16.2.
How does CVE-2011-1578 exploit XSS vulnerabilities?
CVE-2011-1578 allows remote attackers to inject arbitrary web script or HTML through uploaded files with dangerous extensions in Internet Explorer 6 or earlier.
Can CVE-2011-1578 be exploited without user interaction?
Yes, CVE-2011-1578 can potentially be exploited without user interaction, as it involves the handling of uploaded files by the MediaWiki application in vulnerable versions.