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norton91033.txt

norton91033.txt
Posted Sep 16, 2006
Authored by David Matousek | Site matousec.com

Norton insufficiently protects its driver '\Device\SymEvent' against manipulation from malicious applications and it fails to validate its input buffer.

tags | advisory
MD5 | 66367b04d2885d7f5a67cbe1c385bf00

norton91033.txt

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Hello,

I would like to inform you about a vulnerability in Norton Personal Firewall.


Description:

Norton insufficiently protects its driver '\Device\SymEvent' against a manipulation by malicious applications and it
fails to validate its input buffer. It is possible to open this driver and send arbitrary data to it, which are
implicitly believed to be valid. It is possible to assemble the data in the input buffer such that the driver performs
an invalid memory operation and crashes the whole operating system. Further impacts of this bug were not examined.



Vulnerable software:

* Norton Personal Firewall 2006 version 9.1.0.33
* probably all versions of Norton Personal Firewall 2006 and Norton Internet Security 2006
* possibly older versions of Norton Personal Firewall and Norton Internet Security



More details and a proof of concept including source code is available here:
http://www.matousec.com/info/advisories/Norton-Insufficient-validation-of-SymEvent-driver-input-buffer.php

Regards,


--
David Matousek

Founder and Chief Representative of Matousec - Transparent security
http://www.matousec.com/

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