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full-disclosure-uk: [Full-disclosure] ZDI-08-052: OpenLDAP BER D

[Full-disclosure] ZDI-08-052: OpenLDAP BER Decoding Remote DoS Vulnerability

From: <zdi-disclosures_at_nospam>
Date: Thu Aug 14 2008 - 17:34:34 GMT
To: full-disclosure@lists.grok.org.uk, bugtraq@securityfocus.com

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:


  • 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
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