bugtraq - ZDI-11-108: Mac OS X Compact Font Format Decoder Remote Code Execution Vulnerability

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Message-ID: <AF6E290B52139041BD6CA591212E455B575EEEB138@GVW0442EXB.americas.hpqcorp.net>
Date: Tue, 22 Mar 2011 15:40:36 +0000
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>,
	"'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
Subject: ZDI-11-108: Mac OS X Compact Font Format Decoder Remote Code
 Execution Vulnerability

ZDI-11-108: Mac OS X Compact Font Format Decoder Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-108

March 22, 2011

-- CVE ID:
CVE-2011-0176 

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:
Apple

-- Affected Products:
Apple Preview

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 10952. 
For further product information on the TippingPoint IPS, visit:

    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.

-- Vendor Response:
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:
This vulnerability was discovered by:
    * geekable

-- About the Zero Day Initiative (ZDI):
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disclosing discovered vulnerabilities.

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