CVE-2007-4321

N/A
Published: August 14, 2007 at 12:00 AM UTC
Updated: June 16, 2026 at 10:43 PM UTC
1 product affected across 1 vendorFAIL2BAN

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Severity
N/A
Exploit prediction
EPSS 6%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Confidentiality
PARTIAL
Integrity
PARTIAL
Availability
PARTIAL
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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