CVE-2007-4322

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-08-14 · updated 2026-06-16

Description

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.

Affected products

Ac Zoom Blockhosts: 2.0.4

References

http://osvdb.org/36515
http://www.aczoom.com/tools/blockhosts/CHANGES
http://www.ossec.net/en/attacking-loganalysis.html
http://osvdb.org/36515
http://www.aczoom.com/tools/blockhosts/CHANGES
http://www.ossec.net/en/attacking-loganalysis.html

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