National Cyber Awareness System

Vulnerability Summary for CVE-2007-4322

Overview

BlockHosts before 2.0.4 does not properly parse (1) sshd and (2) vsftpd log files, which allows remote attackers to add arbitrary deny entries to the /etc/hosts.allow file and cause a denial of service by adding arbitrary IP addresses to a daemon log file, as demonstrated by connecting through ssh with a client protocol version identification containing an IP address string, or connecting through ftp with a username containing an IP address string, different vectors than CVE-2007-2765.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: MISC

Name: http://www.ossec.net/en/attacking-loganalysis.html

Hyperlink:http://www.ossec.net/en/attacking-loganalysis.html

External Source: CONFIRM

Name: http://www.aczoom.com/tools/blockhosts/CHANGES

Hyperlink:http://www.aczoom.com/tools/blockhosts/CHANGES

External Source: OSVDB

Name: 36515

Hyperlink:http://osvdb.org/36515