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Home arrow SecurityAlert Database

Arrow  Topic :

Outpost Multiple insufficient argument validation of hooked SSDT function Vulnerability


Arrow  SecurityAlert : 2376
Arrow  CVE : CVE-2006-7160
Arrow  SecurityRisk : Medium  Security Risk Medium  (About)
Arrow  Remote Exploit : No
Arrow  Local Exploit : Yes
Arrow  Exploit Available : No
Arrow  Credit : Matousec - Transparent security Research
Arrow  Published : 09.03.2007

Arrow  Affected Software : Outpost Firewall PRO 4.0 (971.584.079)
Outpost Firewall PRO 4.0 (964.582.059)
probably all older versions of Outpost Firewall PRO 4.0
possibly older versions of Outpost Firewall PRO



Arrow  Advisory Content :  

Hello,

We would like to inform you about a vulnerability in Outpost Firewall PRO
4.0.

Description:

Outpost Firewall PRO hooks many functions in SSDT and in at least twelve
cases it fails to validate arguments that come
from user mode. User calls to NtAssignProcessToJobObject, NtCreateKey,
NtCreateThread, NtDeleteFile, NtLoadDriver,
NtOpenProcess, NtProtectVirtualMemory, NtReplaceKey, NtTerminateProcess,
NtTerminateThread, NtUnloadDriver,
NtWriteVirtualMemory with invalid argument values can cause system crashes
because of errors in Outpost driver
Sandbox.sys. Only in case of NtWriteVirtualMemory the user is able to
prevent the system crash because Outpost alerts
the user about a potentially dangerous action that can be blocked. However,
even in this case the implementation of the
Outpost driver is improper and should be fixed. Further impacts of this bug
(like arbitrary code execution in the kernel
mode) were not examined.

Vulnerable software:

* Outpost Firewall PRO 4.0 (971.584.079)
* Outpost Firewall PRO 4.0 (964.582.059)
* probably all older versions of Outpost Firewall PRO 4.0
* possibly older versions of Outpost Firewall PRO

More details and a proof of concept including source code is available
here:
http://www.matousec.com/info/advisories/Outpost-Multiple-insufficient-ar
gument-validation-of-hooked-SSDT-functions.php

Regards,

--
Matousec - Transparent security Research
http://www.matousec.com/




Arrow  Feedback :

If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com.
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