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Kerio Products Password Brute Force and Denial of Service
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Secunia Advisory:
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SA15179
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Release Date:
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2005-05-02
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Popularity:
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10,147 views
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Critical:
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Not critical
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Impact:
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Brute force
DoS
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| Software: | Kerio MailServer 5.x
Kerio MailServer 6.x
Kerio Personal Firewall 2.x
Kerio Personal Firewall 3.x
Kerio Personal Firewall 4.x
Kerio WinRoute Firewall 5.x
Kerio WinRoute Firewall 6.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| | CVE reference: | CVE-2005-1062
CVE-2005-1063
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Description:
Javier Munoz has reported two weaknesses in Kerio WinRoute Firewall, Kerio MailServer and Kerio Personal Firewall, which can be exploited by malicious people to potentially cause a DoS (Denial of Service) and brute force passwords.
1) An error in the remote administration protocol, where multiple login attempts can be performed over a single connection, can be exploited to brute force passwords if the username is known.
2) An error in the remote administration protocol in the handling of certain repeated pre-authentication protocol messages, may be exploited to cause a vulnerable system to consume a large amount of CPU resources by continuously sending specially crafted messages.
The weaknesses affect the following versions:
* Kerio WinRoute Firewall version 6.0.10 and prior.
* Kerio MailServer version 6.0.8 and prior.
* Kerio Personal Firewall version 4.1.2 and prior.
Solution:
The weaknesses have been fixed in the following versions:
* Kerio WinRoute Firewall version 6.0.11 and later.
* Kerio MailServer version 6.0.9 and later.
* Kerio Personal Firewall version 4.1.3 and later.
Restrict access to the administration ports.
Provided and/or discovered by:
Javier Munoz, Secure Computer Group.
Original Advisory:
Secure Computer Group:
http://research.tic.udc.es/scg/advisories/20050429-1.txt
http://research.tic.udc.es/scg/advisories/20050429-2.txt
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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10th Oct, 2008
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