ZDI-11-309 : Novell iPrint Client nipplib.dll GetDriverSettings Remote Code Execution Vulnerability

ZDI-11-309 : Novell iPrint Client nipplib.dll GetDriverSettings Remote
Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-11-309
October 26, 2011

– CVE ID:
CVE-2011-3173

– CVSS:
7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P

– 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 11719.
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.dll component. When handling the
exposed method GetDriverSettings the application assembles a string for
logging consisting of the hostname/port provided as a parameter. When
building this message the process will blindly copy user supplied data
into a fixed-length buffer on the stack. A remote attacker can exploit
this vulnerability to execute arbitrary code under the context of the
browser.

– Vendor Response:

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

http://download.novell.com/Download?buildid=bSpj4nhVEZ0~

– Disclosure Timeline:
2011-07-21 - Vulnerability reported to vendor
2011-10-26 - Coordinated public release of advisory

– Credit:
This vulnerability was discovered by:

• gwslabs.com

• Anonymous

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