Adobe Reader/Acrobat TrueType Font Processing Memory Corruption Vulnerability
2009.June.10

Fortinet's FortiGuard Global Security Research Team Discovers Memory Corruption Vulnerability in Adobe Reader / Acrobat.

Summary:
=======A memory corruption vulnerability exists when processing PDF documents and handling TrueType fonts, which could allow an attacker to execute arbitrary code with the privileges of the current user.

Impact:
======Remote Code Execution.

Risk:
====Critical

Affected Software:
=================For a list of product versions affected, please see the Adobe Security Bulletin reference below.

Additional Information:
======================A crash will sometimes occur when processing a TrueType font within the document, leading to memory corruption and allowing the execution of remote code.

Solutions:
=========Use the solution provided by Adobe (APSB09-07).
The FortiGuard Global Security Research Team released the IPS signature "Adobe.Reader.Acrobat.TrueType.Font.Handling.Memory.Corruption", which covers this specific vulnerability.

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this memory corruption vulnerability. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by the FortiGuard Global Security Research Team, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.

References:
==========FortiGuard Advisory: http://www.fortiguardcenter.com/advisory/FGA-2009-25.html 
Adobe Security Bulletin: http://www.adobe.com/support/security/bulletins/apsb09-07.html 
CVE ID: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1857 

Acknowledgement:
===============Haifei Li of Fortinet's FortiGuard Global Security Research Team


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