Adobe Reader / Acrobat Font Parsing Buffer Overflow Vulnerability

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Secunia Advisory SA41340

Release Date 2010-09-08



Criticality level:Extremely critical
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Impact : System access
Where : From remote

Solution Status Unpatched



Software:
Adobe Acrobat 8.x
Adobe Acrobat 9.x
Adobe Reader 8.x
Adobe Reader 9.x

Description
A vulnerability has been discovered in Adobe Reader, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error within the font parsing in CoolType.dll and can be exploited to cause a stack-based buffer overflow by e.g. tricking a user into opening a specially crafted PDF file.

The vulnerability is confirmed in versions 8.2.4 and 9.3.4. Other versions may also be affected.

NOTE: The vulnerability is currently being actively exploited.

Solution
Do not open untrusted files.


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