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Insecure Credential Storage on Kerio Software
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SUMMARY
As a result of its collaboration relationship the Secure Computer Group
(SCG) along with dotpi.com Research Labs have determined this security
issue on Kerio WinRoute Firewall (KWF), Kerio ServerFirewall (KSF) and
Kerio MailServer (KMS).
Kerio WinRoute Firewall (KWF), Kerio ServerFirewall (KSF) and Kerio
MailServer (KMS) user credential database system uses symmetric encryption
to protect passwords stored on it.
Anyone with a cyphertext of this database (that is, with access to the
configuration files) could reverse the encryption using a universal secret
key hidden into the program logic.
New versions of the software solve this and other minor problems so it is
upgrade its highly recommended.
DETAILS
Vulnerable Systems:
* Kerio WinRoute Firewall version 6.0.8 and prior
* Kerio ServerFirewall version 1.0.0 and prior
* Kerio MailServer version 6.0.4 and prior
Immune Systems:
* Kerio WinRoute Firewall version 6.0.9
* Kerio ServerFirewall version 1.0.1
* Kerio MailServer version 6.0.5
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1022>
CAN-2004-1022
Solutions and recommendations:
Upgrade to the latest versions:
o Kerio WinRoute Firewall 6.0.9
o Kerio ServerFirewall 1.0.1
o Kerio MailServer 6.0.5
As in any other case, follow, as much as possible, the Industry 'Best
Practices' on Planning, Deployment and Operation on this kind of services.
Note: Kerio Winroute Firewall 6.0.7 fixed CAN-2004-1022. Kerio Winroute
Firewall 6.0.9 is the current version fixing CAN-2004-1022 and
CAN-2004-1023
ADDITIONAL INFORMATION
The information has been provided by <mailto:scg@udc.es> Secure Computer
Group.
The original article can be found at:
<http://research.tic.udc.es/scg/advisories/20041214-1.txt>
http://research.tic.udc.es/scg/advisories/20041214-1.txt
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