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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2011-1578
• https://bugzilla.redhat.com/show_bug.cgi?id=695577
• https://bugzilla.redhat.com/show_bug.cgi?id=696360
• https://bugzilla.wikimedia.org/show_bug.cgi?id=28235
• https://exchange.xforce.ibmcloud.com/vulnerabilities/66737
• http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058588.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058910.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059232.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059235.html
• http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000096.html
• http://openwall.com/lists/oss-security/2011/04/13/15
• http://secunia.com/advisories/44142
• http://www.debian.org/security/2011/dsa-2366
• http://www.securityfocus.com/bid/47354
• http://www.vupen.com/english/advisories/2011/0978
• http://www.vupen.com/english/advisories/2011/1100
• http://www.vupen.com/english/advisories/2011/1151