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.

*CVSS:

Base Score: 4.9
  Access Vector: Local
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 3.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Bypass Security

Remedy:

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

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.
  • US-CERT Technical Cyber Security Alert TA06-275A: Multiple Vulnerabilities in Apple and Adobe Products.
  • 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.
  • 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
  • VUPEN/ADV-2006-3852: Apple Mac OS X Multiple Command Execution and Denial of Service Vulnerabilities

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

Reported:

Sep 29, 2006

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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 IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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