CVE-2007-4321 | Date: (C)2007-08-13 (M)2023-12-22 |
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.
CVSS Score and Metrics +CVSS Score and Metrics -CVSS V2 Severity: |
CVSS Score : 6.8 |
Exploit Score: 8.6 |
Impact Score: 6.4 |
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CVSS V2 Metrics: |
Access Vector: NETWORK |
Access Complexity: MEDIUM |
Authentication: NONE |
Confidentiality: PARTIAL |
Integrity: PARTIAL |
Availability: PARTIAL |
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