ZDI-08-052: OpenLDAP BER Decoding Remote DoS Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-052
August 14, 2008

-- CVE ID:
CVE-2008-2952

-- Affected Vendors:
OpenLDAP Foundation

-- Affected Products:
OpenLDAP Foundation OpenLDAP

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 6237. 
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to deny services on
vulnerable installations of OpenLDAP. Authentication is not required to
exploit this vulnerability. 

The specific flaw exists in the decoding of ASN.1 BER network datagrams.
When the size of a BerElement is specified incorrectly, the application
will trigger an assert(), leading to abnormal program termination.

-- Vendor Response:
OpenLDAP Foundation has issued an update to correct this vulnerability. 
More
details can be found at:

http://www.openldap.org/software/release/changes.html

-- Disclosure Timeline:
2008-06-26 - Vulnerability reported to vendor
2008-08-14 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Oscar Mira-Sanchez

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