Apple Mac OS X vpnd denial of service

macos-vpnd-dos (38855) The risk level is classified as LowLow Risk

Description:

Apple Mac OS X virtual private network daemon (vpnd) is vulnerable to a denial of service, caused by an arithmetic exception error in the accept_connections() function. By sending a specially-crafted packet, a remote attacker could exploit this vulnerability to crash the affected service.

Platforms Affected:

  • Apple, Mac OS X 10.5

Remedy:

Upgrade to the latest version of Apple Mac OS X (10.5.4 or later), available from the Apple Mac OS X Web site. See References.

Consequences:

Denial of Service

References:

  • Apple Mac OS X Web site, About the security content of Security Update 2008-004 and Mac OS X 10.5.4 at http://support.apple.com/kb/HT2163.
  • Apple Mac OS X Web site, Apple - Mac OS X at http://www.apple.com/macosx/.
  • BID-26699: Apple Mac OS X VPND Remote Denial of Service Vulnerability
  • CVE-2007-6276: The accept_connections function in the virtual private network daemon (vpnd) in Apple Mac OS X 10.5 before 10.5.4 allows remote attackers to cause a denial of service (divide-by-zero error and daemon crash) via a crafted load balancing packet to UDP port 4112.
  • FrSIRT/ADV-2007-4145: Apple Mac OS X VPN Daemon Connection Handling Denial of Service
  • FrSIRT/ADV-2008-1981: Apple Mac OS X Command Execution and Security Bypass Issues
  • SA27938: Mac OS X vpnd Denial of Service Vulnerability
  • SA30802: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1019052: Mac OS X vpnd Bug Lets Remote Users Deny Service

Reported:

Dec 04, 2007

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