CVE-2007-4322 Denial of service in n/a
Remote attackers can cause denial of service by injecting arbitrary IP addresses into log files, which BlockHosts incorrectly parses into the hosts.allow file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2007-4322?
CVE-2007-4322 is a medium-severity denial of service vulnerability in n/a, published on 14 Aug 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2007-4322?
It affects 1 product.
Products include Ac Zoom Blockhosts.
How do I fix CVE-2007-4322?
No fix has been published for CVE-2007-4322 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2007-4322 being exploited?
There is no known exploitation of CVE-2007-4322 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-h24w-j9mf-mjf2.