Kerberos KDC Cross-Realm Referral Denial of Service Vulnerability

Publish date: February 10, 2011
  Severity: LOW
  CVE Identifier: CVE-2009-3295
  Advisory Date: FEB 10, 2011

  DESCRIPTION

The prep_reprocess_req function in kdc/do_tgs_req.c in the cross-realm referral implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 before 1.7.1 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a ticket request.

  TREND MICRO PROTECTION INFORMATION

Trend Micro Deep Security shields networks through Deep Packet Inspection (DPI) rules. Trend Micro customers using OfficeScan with Intrusion Defense Firewall (IDF) plugin are also protected from attacks using these vulnerabilities. Please refer to the filter number and filter name when applying appropriate DPI and/or IDF rules.

  SOLUTION

  Trend Micro Deep Security DPI Rule Number: 1003900
  Trend Micro Deep Security DPI Rule Name: 1003900 - Kerberos KDC Cross-Realm Referral Denial Of Service Vulnerability

  AFFECTED SOFTWARE AND VERSION

  • mit kerberos 5-1.7
  • mit kerberos 5-1.7.1

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