TippingPoint Zero Day Initiative
 

OpenLDAP BER Decoding Remote DoS Vulnerability

ZDI-08-052: August 14th, 2008

CVE ID

Affected Vendors

Affected Products

    OpenLDAP

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6237. For further product information on the TippingPoint IPS:

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:

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