TippingPoint Zero Day Initiative
 

Novell Client NWSPOOL.DLL Stack Overflow Vulnerability

ZDI-07-045: August 6th, 2007

CVE ID

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 5262, 5266. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on systems with vulnerable installations of the Novell Netware Client. Authentication is not required to exploit this vulnerability.

The specific flaw exists in nwspool.dll which is responsible for handling RPC requests through the spoolss named pipe. Several RPC functions exposed by this DLL do not properly verify argument sizes and subsequently copy user-supplied data to a stack-based buffer resulting in an exploitable overflow.

Vendor Response

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

Disclosure Timeline

    2007-02-16 - Vulnerability reported to vendor
    2007-08-06 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Anonymous