RHSA-2007:0095Critical

Red Hat Security Advisory: krb5 security update

Published
April 3, 2007
Last Modified
June 25, 2026

🔗 CVE IDs covered (3)

CVE-2007-0956 →CVE-2007-0957 →CVE-2007-1216 →

📋 Description

CVE-2007-0956 — Unauthorized access via krb5-telnet daemon CVE-2007-0957 — krb5_klog_syslog() stack buffer overflow CVE-2007-1216 — krb5 double free flaw

🎯 Affected products200

  • Red Hat Desktop version 3
  • Red Hat Enterprise Linux (v. 5 server)
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1
  • Red Hat Enterprise Linux AS version 3
  • Red Hat Enterprise Linux AS version 4
  • Red Hat Enterprise Linux Desktop (v. 5 client)
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client)
  • Red Hat Enterprise Linux Desktop version 4
  • Red Hat Enterprise Linux ES version 2.1
  • Red Hat Enterprise Linux ES version 3
  • Red Hat Enterprise Linux ES version 4
  • Red Hat Enterprise Linux WS version 2.1
  • Red Hat Enterprise Linux WS version 3
  • Red Hat Enterprise Linux WS version 4
  • Red Hat Linux Advanced Workstation 2.1
  • krb5-0:1.2.2-44.src as a component of Red Hat Enterprise Linux AS (Advanced Server) version 2.1
  • krb5-0:1.2.2-44.src as a component of Red Hat Enterprise Linux ES version 2.1
  • krb5-0:1.2.2-44.src as a component of Red Hat Enterprise Linux WS version 2.1
  • krb5-0:1.2.2-44.src as a component of Red Hat Linux Advanced Workstation 2.1
  • krb5-0:1.2.7-61.src as a component of Red Hat Desktop version 3
  • krb5-0:1.2.7-61.src as a component of Red Hat Enterprise Linux AS version 3
  • krb5-0:1.2.7-61.src as a component of Red Hat Enterprise Linux ES version 3
  • krb5-0:1.2.7-61.src as a component of Red Hat Enterprise Linux WS version 3
  • krb5-0:1.3.4-46.src as a component of Red Hat Enterprise Linux AS version 4
  • krb5-0:1.3.4-46.src as a component of Red Hat Enterprise Linux Desktop version 4
  • krb5-0:1.3.4-46.src as a component of Red Hat Enterprise Linux ES version 4
  • krb5-0:1.3.4-46.src as a component of Red Hat Enterprise Linux WS version 4
  • krb5-0:1.5-23.src as a component of Red Hat Enterprise Linux (v. 5 server)
  • krb5-0:1.5-23.src as a component of Red Hat Enterprise Linux Desktop (v. 5 client)
  • krb5-0:1.5-23.src as a component of Red Hat Enterprise Linux Desktop Workstation (v. 5 client)
  • +170 more not shown

✅ Remediation

The krb5 telnet daemon is an xinetd service. You can determine if krb5 telnetd is enabled with the command: /sbin/chkconfig --list krb5-telnet The output of this command will be "krb5-telnet on" if krb5 telnet is enabled. krb5 telnet daemon can be immediately disabled with the command: /sbin/chkconfig krb5-telnet off Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188

🔗 References (6)