Vulnerability Details : 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 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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2007-4321
Probability of exploitation activity in the next 30 days: 21.71%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 96 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2007-4321
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST |
References for CVE-2007-4321
Products affected by CVE-2007-4321
- cpe:2.3:a:fail2ban:fail2ban:0.8:*:*:*:*:*:*:*