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Kerio Personal Firewall Administration Interface Buffer Overflow and Replay Attack
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Secunia Advisory:
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SA8682
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Release Date:
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2003-04-29
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Last Update:
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2008-02-22
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Popularity:
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8,730 views
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Critical:
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Highly critical
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Impact:
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Security Bypass
System access
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Where:
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From remote
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Solution Status:
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Partial Fix
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| Software: | Kerio Personal Firewall 2.x
Tiny Personal Firewall 2.x
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Subscribe:
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| CVE reference: | CVE-2003-0220
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Description:
Two vulnerabilities have been reported in Kerio Personal Firewall (KPF), which can be exploited by malicious people to bypass certain security restrictions or to compromise a vulnerable system.
1) A boundary error exists within the remote administration interface when processing handshake requests. This can be exploited to cause a buffer overflow via two specially crafted handshake packets, the first packet specifying an incorrect size for the second packet.
Successful exploitation allows execution of arbitrary code, but requires that a malicious person can connect to the remote administration interface.
2) An authentication error within the remote administration interface can be exploited to gain administrative access to the interface via replay attacks.
The vulnerabilities are reported in version 2.1.4. Prior versions may also be affected.
Solution:
Update to version 2.1.5 or later, which fixes vulnerability #1.
Disable the remote administration functionality.
Provided and/or discovered by:
Emiliano Kargieman, Hernán Gips, and Javier Burroni from Core Security Technologies.
Changelog:
2006-02-28: Added CVE reference.
2008-02-22: Updated "Solution" section with patch information for vulnerability #1. Updated "Description" section.
Original Advisory:
http://www.coresecurity.com/common/showdoc.php?idx=314&idxseccion=10
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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