CVE-2007-4321
fail2ban 0.8 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause...
- Published
- Aug 14, 2007
- Updated
- Aug 7, 2024
- Assigning CNA
- mitre
- Evidence observed
- Jul 28, 2007
Primary CVSS
nvd · CVSS 2.0
AV:N/AC:M/Au:N/C:P/I:P/A:PLow · next 30 days
- Percentile
- 92.8%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
fail2ban 0.8 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a client protocol version identification containing an IP address string, a different vector than CVE-2006-6302.
Sources
1Daniel B. Cid · linux · Jul 28, 2007
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.