FCKeditor ::$DATA file upload
| fckeditor-data-file-upload (34982) |  Medium Risk |
Description:
FCKeditor could allow a remote attacker to upload arbitrary PHP files, caused by improper validation of file extensions. A remote attacker could send a specially-crafted request using an alternate data stream syntax (::$DATA) to upload a malicious PHP file, which could allow the attacker to execute arbitrary PHP code on the vulnerable system.
Platforms Affected:
- FCKeditor, FCKeditor 2.4.3
Remedy:
Upgrade to the latest version of Knowledgeroot Knowledgebase (0.9.8.4 or later), available from SourceForge.net: Files. See References.
Consequences:
Gain Access
References:
- bitchiller Web site, NTFS Alternate Data Streams und Dateiuploads auf Webseiten at http://www.bitchiller.de/?p=20.
- FCKeditor Web site, FCKeditor - The text editor for Internet at http://www.fckeditor.net/.
- ha.ckers.org Web application security lab Blog, Wednesday, June 6th, 2007, Additional Image Bypass on Windows at http://ha.ckers.org/blog/20070606/additional-image-bypass-on-windows/.
- SourceForge.net: Files, Knowledgeroot Knowledgebase - File Release Notes and Changelog - Release Name: 0.9.8.4 at http://sourceforge.net/project/shownotes.php?release_id=520159.
- BID-24510: FCKeditor Alternative Data Stream Arbitrary File Upload Vulnerability
- CVE-2007-3163: Incomplete blacklist vulnerability in the filemanager in Frederico Caldeira Knabben FCKeditor 2.4.2 allows remote attackers to upload arbitrary .php files via an alternate data stream syntax, as demonstrated by .php::$DATA filenames, a related issue to CVE-2006-0658.
- SA25719: FCKeditor ADS File Upload Vulnerability
- SA25923: Knowledgeroot Knowledgebase FCKeditor ADS File Upload Vulnerability
Reported:
Jun 06, 2007
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