Apple Mac OS X Apple Type Services '.dfont' Font File Memory Corruption Vulnerability

Bugtraq ID:	51832
Class:	Unknown
CVE:	CVE-2011-3446 CVE-2011-3446
Remote:	Yes
Local:	No
Published:	Feb 02 2012 12:00AM
Updated:	Mar 19 2015 07:35AM
Credit:	Will Dormann of CERT.
Vulnerable:	Apple Mac Os X Server 10.7.2 Apple Mac Os X Server 10.7.1 Apple Mac Os X Server 10.7 Apple Mac Os X Server 10.6.8 Apple Mac Os X 10.7.2 Apple Mac Os X 10.7.1
Not Vulnerable:	Apple Mac Os X Server 10.7.3 Apple Mac Os X 10.7.3

Apple Mac OS X Apple Type Services '.dfont' Font File Memory Corruption Vulnerability

Apple Mac OS X is prone to a memory-corruption vulnerability affecting the Apple Type Services (ATS) component.

Attackers can exploit this issue by enticing an unsuspecting user to open a malicious font file in the Font Book application.

An attacker could exploit this issue to execute arbitrary code in the context of the affected application. Failed exploit attempts will likely result in denial-of-service conditions.

This issue affects Mac OS X 10.6.8, Mac OS X Server 10.6.8, Mac OS X Lion 10.7 to 10.7.2 and
Mac OS X Lion Server 10.7 to 10.7.2.

Apple Mac OS X Apple Type Services '.dfont' Font File Memory Corruption Vulnerability

Currently we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Apple Mac OS X Apple Type Services '.dfont' Font File Memory Corruption Vulnerability

Solution:
The vendor has released an advisory and fixes. Please see the references for details.


Apple Mac Os X 10.7.1

• Apple MacOSXUpdCombo10.7.3.dmg
  For OS X Lion v10.7 and v10.7.1
  http://www.apple.com/support/downloads/

Apple Mac Os X 10.7.2

• Apple MacOSXUpd10.7.3.dmg
  For OS X Lion v10.7.2
  http://www.apple.com/support/downloads/

Apple Mac Os X Server 10.7

• Apple MacOSXServerUpdCombo10.7.3.dmg
  For OS X Lion Server v10.7 and v10.7.1
  http://www.apple.com/support/downloads/

Apple Mac Os X Server 10.7.1

• Apple MacOSXServerUpdCombo10.7.3.dmg
  For OS X Lion Server v10.7 and v10.7.1
  http://www.apple.com/support/downloads/

Apple Mac Os X Server 10.7.2

• Apple MacOSXServerUpd10.7.3.dmg
  For OS X Lion Server v10.7.2
  http://www.apple.com/support/downloads/

Apple Mac Os X Server 10.6.8

• Apple SecUpdSrvr2012-001.dmg
  For Mac OS X Server v10.6.8
  http://www.apple.com/support/downloads/

Apple Mac OS X Apple Type Services '.dfont' Font File Memory Corruption Vulnerability

References:

• Mac OS X Homepage (Apple)
  
• About the security content of OS X Lion v10.7.3 and Security Update 2012-001 (Apple)
  
• Apple Mac OS X ATS data-font memory corruption vulnerability (CERT)