TI-2006-06066 Aliases CVE-2006-6302 GHSA-j744-4wh9-3vxg

fail2ban 0.7.4 and earlier does not properly parse sshd log files, which allows remote…

LOW 26Published 2006-12-06 · Updated 2024-08-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · Partial
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

fail2ban 0.7.4 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 login name containing certain strings with an IP address.

Why it matters now

EPSS 0.0178 78th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:fail2ban:fail2ban::::::::	up to 0.7.4	Vulnerable	fail2ban

cpe:2.3:a:fail2ban:fail2ban:*:*:*:*:*:*:*:* Versions up to 0.7.4 Vulnerable ·fail2ban

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2006-6302
2026-10-03 Alias added: GHSA-j744-4wh9-3vxg

References

Advisory 1

GLSA-200702-05

Other 2

TI-2021-12417 Possible RCE vulnerability in mailing action using mailutils (mail-whois) CVSS 3.1HIGH 8.1
TI-2007-04181 fail2ban 0.8 and earlier does not properly parse sshd log files, which allows remote… CVSS 2.0MEDIUM 6.8
TI-2012-04743 server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the… CVSS 2.0HIGH 7.5
TI-2013-05868 config/filter.d/cyrus-imap.conf in the cyrus-imap filter in Fail2ban before 0.8.11 allows… CVSS 2.0MEDIUM 5.0
TI-2013-05867 config/filter.d/postfix.conf in the postfix filter in Fail2ban before 0.8.11 allows… CVSS 2.0MEDIUM 5.0
TI-2013-01945 The apache-auth.conf, apache-nohome.conf, apache-noscript.conf, and apache-overflows.conf… CVSS 2.0MEDIUM 5.0

See all 8 →

Sources

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