ZDI-12-102 : Novell iPrint Client nipplib.dll GetDriverSettings realm Remote Code Execution Vulnerability

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

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ZDI-12-102 : Novell iPrint Client nipplib.dll GetDriverSettings realm
Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-102
June 27, 2012

- -- CVE ID:
CVE-2011-4187

- -- 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 12404.
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 in that a target must visit a malicious page or open a malicious
file. 

The flaw exists within the exposed GetDriverSettings method in the nipplib
component imported by ienipp and npnipp. When encountering a realm
parameter this user supplied value's length is not properly verified before
copying into a fixed length buffer on the stack. A remote attacker can
exploit this vulnerability to execute arbitrary code under the context of
the process.

- -- Vendor Response:
Novell has issued an update to correct this vulnerability. More details can
be found at:
http://www.novell.com/support/viewContent.do?externalId=7010143

- -- Disclosure Timeline:
2011-10-21 - Vulnerability reported to vendor
2012-06-27 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:

* gwslabs.com

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