Kerio Multiple insufficient argument validation of hooked SSDT function Vulnerability
SecurityAlert : 1685 CVE : CVE-2006-5153 SecurityRisk : Low (About) Remote Exploit : No Local Exploit : No Exploit Available : No Credit : David Matousek (david matousec com) Published : 05.10.2006
Affected Software :
Kerio Personal Firewall
Advisory Content :
Hello,
I would like to inform you about a vulnerability in Sunbelt Kerio Personal
Firewall.
Description:
Sunbelt Kerio Personal Firewall hooks many functions in SSDT and in at
least six cases it fails to validate arguments
that come from user mode. User calls to NtCreateFile, NtDeleteFile,
NtLoadDriver, NtMapViewOfSection, NtOpenFile,
NtSetInformationFile with invalid argument values can cause system crashes
because of errors in Kerio drivers fwdrv.sys
and khips.sys. Further impacts of this bug (like arbitrary code execution
in the kernel mode) were not examined.
Vulnerable software:
* Sunbelt Kerio Personal Firewall 4.3.268
* Sunbelt Kerio Personal Firewall 4.3.246
* Sunbelt Kerio Personal Firewall 4.2.3.912
* probably all versions of Sunbelt Kerio Personal Firewall 4
* possibly older versions of Sunbelt Kerio Personal Firewall
More details and a proof of concept including source code is available
here:
http://www.matousec.com/info/advisories/Kerio-Multiple-insufficient-argu
ment-validation-of-hooked-SSDT-functions.php
Regards,
--
David Matousek
Founder and Chief Representative of Matousec - Transparent security
http://www.matousec.com/
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