Advisory Details

March 22nd, 2011

Mac OS X Compact Font Format Decoder Remote Code Execution Vulnerability

ZDI-11-108
ZDI-CAN-860

CVE ID CVE-2011-0176
CVSS SCORE 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS Apple
AFFECTED PRODUCTS Preview
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10952. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mac OS X's CFF Decoder. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within how the Type1Scaler library processes a specially formatted compact font file. When processing this file, the application will corrupt memory outside the bounds of an allocated buffer. This can lead to code execution under the context of the application that utilizes the library.

ADDITIONAL DETAILS Apple has issued an update to correct this vulnerability. More details can be found at:
http://support.apple.com/kb/HT4581
DISCLOSURE TIMELINE
  • 2010-12-01 - Vulnerability reported to vendor
  • 2011-03-22 - Coordinated public release of advisory
CREDIT geekable
BACK TO ADVISORIES