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ZDI-12-031 : Novell iPrint Server attributes-natural-language Remote
Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-031
February  8, 2012

- -- CVE ID:
CVE-2011-4194

- -- 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 12044.
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 Server. Authentication is not
required to exploit this vulnerability.

The flaw exists within the mod_ipp apache module component of the
iprint-server, which listens by default on 631/tcp. During the handling
of get-printer-attributes requests containing a
attributes-natural-language attribute cause a validation routine to be
hit. When validating this parameter the contents of the attribute are
copied, without validation, to 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=7010084




- -- Disclosure Timeline:
2011-10-21 - Vulnerability reported to vendor

2012-02-08 - Coordinated public release of advisory



- -- Credit:
This vulnerability was discovered by:

* G. Geshev



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