ZDI-11-178: Novell iPrint nipplib.dll client-file-name Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-178

June 6, 2011

-- CVE ID:
CVE-2011-1705

-- CVSS:
9, (AV:N/AC:L/Au:N/C:P/I:P/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 11195. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Novell iPrint Client. User interaction is
required to exploit this vulnerability in that the target must visit a
malicious page or open a malicious file.

The flaw exists within the nipplib component which is used by both the
ActiveX and Netscape compatible browser plugins. When handling the
client-file-name parameter from the user specified printer-url the
process blindly copies user supplied data into a fixed-length buffer on
the heap. A remote attacker can exploit this vulnerability to execute
arbitrary code under the context of the browser.


-- Vendor Response:
Novell states:
The defect associated has been updated with the following patch(es):
http://download.novell.com/Download?buildid=6_bNby38ERg~


iPrint on Open Enterprise Server SP2 (Open Enterprise Server 2.0.2
Support Pack 2 x86-64)
http://download.novell.com/Download?buildid=BKCEl4nPhLA~

iPrint on Open Enterprise Server SP2 (Open Enterprise Server 2.0.2
Support Pack 2 x86)
http://download.novell.com/Download?buildid=E7JKbXS39S8~

iPrint on Open Enterprise Server SP3 (Open Enterprise Server 2.0.3
Support Pack 3 x86-64)
http://download.novell.com/Download?buildid=rOKxHB2JX7c~

iPrint on Open Enterprise Server SP3 (Open Enterprise Server 2.0.3
Support Pack 3 x86)
http://download.novell.com/Download?buildid=DyaFUz6Hx_U~

* These patches may be "Field Test Patches" and should be tested first
on a staging or test machine before being applied directly to a
production system.
If you have any questions please contact a Customer Service
Representative at 1-800-858-4000.

-- Disclosure Timeline:
2011-04-01 - Vulnerability reported to vendor
2011-06-06 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Ivan Rodriguez Almuina

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