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Vulnerabilities - November 8, 2004

by Donna Buenaventura / November 8, 2004 3:07 PM PST

Kerio Personal Firewall Unspecified Packet Processing Bug May Let Remote Users Deny Service

Version(s): prior to 4.1.2
Description: A vulnerability was reported in Kerio Personal Firewall. A remote user may be able to cause denial of service conditions.

The vendor reported that there is a packet processing flaw that can trigger 100% CPU utilization on the target system. No further details were provided.
Impact: A remote user may be able to cause excessive CPU utilization on the target system.

Solution: The vendor has issued a fixed version (4.1.2), available at:

http://www.kerio.com/kpf_download.html

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Sun Java Runtime Environment (JRE) vulnerability
by Donna Buenaventura / November 8, 2004 3:09 PM PST

Sun JRE Integer Wraparound Bug in InitialDirContext() Lets Remote Users Deny Service

Version(s): 1.4.2, 1.5.0

Description: A denial of service vulnerability was reported in Sun's Java Runtime Environment (JRE) in the processing of DNS lookups. A remote user can cause the target service to become unstable.

Kurt Huwig of iKu reported that there is an integer wraparound error in the InitialDirContext() function when performing DNS lookups. If a remote user can cause more than 32768 lookups, denial of service conditions may occur.

Impact: A remote user can cause the target service to become unstable.

Solution: No solution was available at the time of this entry.

http://www.securitytracker.com/alerts/2004/Nov/1012137.html

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Internet Explorer Discloses Whether Specified Files Exist
by Donna Buenaventura / November 8, 2004 3:12 PM PST

to Remote Users

Version(s): 6.00.2800

Description: A vulnerability was reported in Microsoft Internet Explorer (IE). A remote user can determine if files exist in certain system directories.

Benjamin Tobias Franz reported that a remote user can create scripting code that, when loaded by the target user, will determine whether specified files exist in the WINDOWS, SYSTEM, SYSTEM32, DESKTOP, COMMAND, Internet Explorer, and c:\ directories.

On some versions of IE, when using the 'res://' protocol to attempt to open a file, IE will open a new window if the specified file does not exist but not if the file exists. The scripting code can test this condition to determine if the file exists or not.

[Editor's note: We could not reproduce the results on 6.00.2900.]

Impact: A remote user can determine if specified files in certain system directories exist on the target system.

Solution: No solution was available at the time of this entry.

http://www.securitytracker.com/alerts/2004/Nov/1012138.html

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