Apple Mac OS X and Mac OS X Server Fast User Switching unauthorized access

macos-fast-user-unauthorized-access (29290) The risk level is classified as MediumMedium Risk

Description:

Apple Mac OS X and Mac OS X Server could allow a local attacker to gain access to another user's Kerberos tickets. An unspecified error in the handling of Fast User Switching could allow an attacker to gain unauthorized access to the Kerberos tickets of other users.

Platforms Affected:

  • Apple, Mac OS X 10.4
  • Apple, Mac OS X 10.4.1
  • Apple, Mac OS X 10.4.10
  • Apple, Mac OS X 10.4.11
  • Apple, Mac OS X 10.4.2
  • Apple, Mac OS X 10.4.3
  • Apple, Mac OS X 10.4.4
  • Apple, Mac OS X 10.4.5
  • Apple, Mac OS X 10.4.6
  • Apple, Mac OS X 10.4.7
  • Apple, Mac OS X Server 10.4
  • Apple, Mac OS X Server 10.4.1
  • Apple, Mac OS X Server 10.4.10
  • Apple, Mac OS X Server 10.4.11
  • Apple, Mac OS X Server 10.4.2
  • Apple, Mac OS X Server 10.4.3
  • Apple, Mac OS X Server 10.4.4
  • Apple, Mac OS X Server 10.4.5
  • Apple, Mac OS X Server 10.4.6
  • Apple, Mac OS X Server 10.4.7

Remedy:

Apply Apple Security Update 2006-006 or Mac OS X 10.4.8 Update, available from the Apple Web site. See References.

Consequences:

Gain Access

References:

  • Mac OS X 10.4.8 and Security Update 2006-006, About the security content of the Mac OS X 10.4.8 Update and Security Update 2006-006 at http://docs.info.apple.com/article.html?artnum=304460.
  • US-CERT Technical Cyber Security Alert TA06-275A, Multiple Vulnerabilities in Apple and Adobe Products at http://www.us-cert.gov/cas/techalerts/TA06-275A.html.
  • BID-20271: Apple Mac OS X Pre 10.4.8 Multiple Security Vulnerabilities
  • CVE-2006-4393: Unspecified vulnerability in LoginWindow in Apple Mac OS X 10.4 through 10.4.7, when Fast User Switching is enabled, allows local users to gain access to Kerberos tickets of other users.
  • OSVDB ID: 29271: Mac OS X LoginWindow Fast User Switching Kerberos Ticket Disclosure
  • SA22187: Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1016959: Apple LoginWindow Lets Local Users Access Another User`s Kerberos Tickets or Bypass Access Controls
  • VUPEN/ADV-2006-3852: Apple Mac OS X Multiple Command Execution and Denial of Service Vulnerabilities

Reported:

Sep 29, 2006

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