Apple Mac OS X and Mac OS X Server LoginWindow security bypass

macos-loginwindow-security-bypass (29293) The risk level is classified as MediumMedium Risk

Description:

Apple Mac OS X and Mac OS X Server could allow a local attacker to bypass security restrictions and log in to the system via the LoginWindow. A logic error in the LoginWindow, when used with service access controls, allows network accounts without GUIDs to authenticate users. An attacker could exploit this vulnerability to bypass LoginWindow service access controls and log in as an authenticated user.

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:

Bypass Security

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-2006-4394: A logic error in LoginWindow in Apple Mac OS X 10.4 through 10.4.7, allows network accounts without GUIds to bypass service access controls and log into the system using loginwindow via unknown vectors.
  • FrSIRT/ADV-2006-3852: Apple Mac OS X Multiple Command Execution and Denial of Service Vulnerabilities
  • OSVDB ID: 29272: Mac OS X LoginWindow Network Account Access Bypass
  • 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
  • US-CERT VU#897628: Apple Mac OS X may allow network accounts to bypass service access controls

Reported:

Sep 29, 2006

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

Copyright (c) 1994-2008 Internet Security Systems, Inc. All rights reserved worldwide.

For corrections or additions please email xforce@iss.net

Return to the main page