Advisory Details

November 2nd, 2009

Novell eDirectory LDAP Null Base DN Denial of Service Vulnerability

ZDI-09-075
ZDI-CAN-513

CVE ID CVE-2009-3862
CVSS SCORE
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 9234. 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 exploit this vulnerability.

The specific flaw exists within Novell's eDirectory Server's LDAP implementation. Novell eDirectory's NDSD process binds to port 389/TCP for handling LDAP requests. When the service processes a search request with an undefined BaseDN, it will become unresponsive resulting in an inability to query or 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=7004721
DISCLOSURE TIMELINE
  • 2009-07-14 - Vulnerability reported to vendor
  • 2009-11-02 - Coordinated public release of advisory
CREDIT Anonymous
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