Apple Mac OS X Application Firewall launchd bypass

macosx-appfw-launchd-bypass (38492) The risk level is classified as HighHigh Risk

Description:

The Apple Mac OS X Application Firewall could allow a remote attacker to bypass firewall settings. If the Application Firewall settings are changed, the changes will not go into effect for any processes started by launchd until the process is restarted. An attacker could exploit this vulnerability to bypass the firewall and gain unauthorized access to the system.

Platforms Affected:

  • Apple, Mac OS X 10.5
  • Apple, Mac OS X Server 10.5

Remedy:

Apply the Mac OS X 10.5.1 Update, available from the Apple Web site. See References.

Consequences:

Bypass Security

References:

  • Apple Web site, About the security content of the Mac OS X 10.5.1 Update (client and server) at http://docs.info.apple.com/article.html?artnum=307004.
  • BID-26459: Apple Max OS X Application Firewall Launchd Firewall Bypass Weakness
  • CVE-2007-4704: The Application Firewall in Apple Mac OS X 10.5 does not apply changed settings to processes that are started by launchd until the processes are restarted, which might allow attackers to bypass intended access restrictions.
  • FrSIRT/ADV-2007-3897: Apple Mac OS X Security Update Fixes Application Firewall Vulnerabilities
  • SA27695: Apple Mac OS X Application Firewall Weaknesses and Security Issue
  • SECTRACK ID: 1018958: Mac OS X Application Firewall Bugs May Let Remote Users Access the Services on the Target System

Reported:

Nov 15, 2007

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