Advisory Details

February 8th, 2012

Novell iPrint Server attributes-natural-language Remote Code Execution Vulnerability

ZDI-12-031
ZDI-CAN-1354

CVE ID CVE-2011-4194
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
AFFECTED VENDORS Novell
AFFECTED PRODUCTS iPrint
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12044. For further product information on the TippingPoint IPS: 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.

ADDITIONAL DETAILS 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 G. Geshev
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