Advisory Details

February 7th, 2011

Novell eDirectory Malformed NCP Request Denial of Service Vulnerability

ZDI-11-060
ZDI-CAN-445

CVE ID CVE-2010-4327
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
AFFECTED VENDORS Novell
AFFECTED PRODUCTS eDirectory
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 8275. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows attackers to deny services on vulnerable installations of Novell eDirectory. Authentication is not required in order to trigger this vulnerability.

The flaw exists within Novell's eDirectory Server's NCP implementation. Novell's eDirectory Server binds to port 524 for processing NCP requests. When the application processes a malformed FileSetLock request, the service will become unresponsive resulting in an inability to authenticate to that server.

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=7007781&sliceId=2
DISCLOSURE TIMELINE
  • 2009-03-26 - Vulnerability reported to vendor
  • 2011-02-07 - Coordinated public release of advisory
CREDIT 1c239c43f521145fa8385d64a9c32243
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