SB2014013103 - Input validation error in MediaWiki

Description

This security bulletin contains information about 1 security vulnerability.

1) Input validation error (CVE-ID: CVE-2014-1610)

The vulnerability allows a remote #AU# to read and manipulate data.

MediaWiki 1.22.x before 1.22.2, 1.21.x before 1.21.5, and 1.19.x before 1.19.11, when DjVu or PDF file upload support is enabled, allows remote attackers to execute arbitrary commands via shell metacharacters in (1) the page parameter to includes/media/DjVu.php; (2) the w parameter (aka width field) to thumb.php, which is not properly handled by includes/media/PdfHandler_body.php; and possibly unspecified vectors in (3) includes/media/Bitmap.php and (4) includes/media/ImageHandler.php.

Remediation

Install update from vendor's website.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127942.html
• http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127948.html
• http://lists.wikimedia.org/pipermail/mediawiki-announce/2014-January/000140.html
• http://osvdb.org/102630
• http://secunia.com/advisories/56695
• http://secunia.com/advisories/57472
• http://www.checkpoint.com/defense/advisories/public/2014/cpai-26-jan.html
• http://www.checkpoint.com/threatcloud-central/articles/2014-01-28-tc-researchers-discover.html
• http://www.debian.org/security/2014/dsa-2891
• http://www.exploit-db.com/exploits/31329/
• http://www.osvdb.org/102631
• http://www.securityfocus.com/bid/65223
• http://www.securitytracker.com/id/1029707
• https://bugzilla.wikimedia.org/attachment.cgi?id=14361&action=diff
• https://bugzilla.wikimedia.org/attachment.cgi?id=14384&action=diff
• https://bugzilla.wikimedia.org/show_bug.cgi?id=60339
• https://gerrit.wikimedia.org/r/#/c/110069/
• https://gerrit.wikimedia.org/r/#/c/110069/2/includes/media/Bitmap.php
• https://gerrit.wikimedia.org/r/#/c/110215/