Advisory Details

September 30th, 2009

Novell NetWare NFS Portmapper and RPC Module Stack Overflow Vulnerability

ZDI-09-067
ZDI-CAN-497

CVE ID
CVSS SCORE
AFFECTED VENDORS Novell
AFFECTED PRODUCTS Netware
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 8280. 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 Netware NFS Portmapper daemon. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the processing of CALLIT RPC calls. The vulnerable daemon explicitly trusts a length field when receiving data which is later copied into a stack buffer, potentially resulting in a stack overflow. Successful exploitation of this vulnerability can lead to remote code execution under the context of the daemon.

ADDITIONAL DETAILS Novell has issued an update to correct this vulnerability. More details can be found at:
http://download.novell.com/Download?buildid=1z3z-OsVCiE~
DISCLOSURE TIMELINE
  • 2009-06-23 - Vulnerability reported to vendor
  • 2009-09-30 - Coordinated public release of advisory
CREDIT Nick DeBaggis
Anonymous
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