Trend Micro Security

Kerberos KDC Cross-Realm Referral Denial of Service Vulnerability

2011年2月10日
  危険度: : 低
  CVE識別番号: CVE-2009-3295

  概要

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.

  トレンドマイクロの対策

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.

  対応方法

  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

  影響を受けるソフトウェア

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