Title: ImpressPages CMS v3.6 Remote Arbitrary File Deletion Vulnerability
Advisory ID: ZSL-2013-5158
Type: Local/Remote
Impact: Manipulation of Data
Risk: (3/5)
Release Date: 31.10.2013

Summary

ImpressPages CMS is an open source web content management system with revolutionary drag & drop interface.

Description

Input passed to the 'files[0][file]' parameter in '/ip_cms/modules/administrator/repository/controller.php' is not properly sanitised before being used to delete files. This can be exploited to delete files with the permissions of the web server via directory traversal sequences passed within the affected POST parameter.

Vendor

ImpressPages UAB - http://www.impresspages.org

Affected Version

3.6

Tested On

Microsoft Windows 7 Ultimate SP1 (EN)
Apache 2.4.2 (Win32)
PHP 5.4.7
MySQL 5.5.25a

Vendor Status

[12.10.2013] Vulnerability discovered.
[20.10.2013] Contact with the vendor.
[20.10.2013] Vendor responds asking more details.
[22.10.2013] Sent details to the vendor.
[22.10.2013] Vendor working on reported issue.
[22.10.2013] Asked vendor for estimated timeframe for developing patch.
[24.10.2013] Vendor confirms the issue promising fix.
[29.10.2013] Vendor releases version 3.7 to address this issue.
[31.10.2013] Coordinated public security advisory released.

PoC

impresspages_del.txt

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] http://www.impresspages.org/blog/impresspages-cms-3-7-is-mobile-as-never-before/
[2] http://packetstormsecurity.com/files/123872
[3] http://www.osvdb.org/show/osvdb/99222
[4] http://cxsecurity.com/issue/WLB-2013110001
[5] http://www.securityfocus.com/bid/63470
[6] http://www.exploit-db.com/exploits/29328/
[7] http://secunia.com/advisories/55505

Changelog

[31.10.2013] - Initial release
[01.11.2013] - Added reference [2], [3], [4] and [5]
[03.11.2013] - Added reference [6]
[04.11.2013] - Added reference [7]

Contact

Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk