TPTI-10-05: Novell iPrint Client Browser Plugin Remote File Deletion Vulnerability

[ZDI Disclosures <zdi-disclosures () tippingpoint com>]

TPTI-10-05: Novell iPrint Client Browser Plugin Remote File Deletion Vulnerability
http://dvlabs.tippingpoint.com/advisory/TPTI-10-05
August 4, 2010

-- CVSS:
7.8, (AV:N/AC:L/Au:N/C:N/I:N/A:C)

-- Affected Vendors:
Novell

-- Affected Products:
Novell iPrint

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10063. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to delete all files on a
system with a vulnerable installation of the Novell iPrint Client. User
interaction is required to exploit this vulnerability in that the target
must visit a malicious page.

The specific flaw exists within the nipplib.dll module that can be
reached via the ienipp.ocx ActiveX control with CLSID
36723f97-7aa0-11d4-8919-FF2D71D0D32C. The CleanUploadFiles method
appears to be used to remove temporary files within a contained
directory. However, due to a logic flaw a remote attacker can abuse the
function to force the process to recursively delete all files on the
target system. 

-- Vendor Response:
Novell has issued an update to correct this vulnerability. More
details can be found at:

http://download.novell.com/Download?buildid=ftwZBxEFjIg~

-- Disclosure Timeline:
2010-07-15 - Vulnerability reported to vendor
2010-08-04 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Aaron Portnoy, TippingPoint DVLabs