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CVE-2006-6302

5.0 · MEDIUM

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…

Published Dec 6, 2006fail2banEPSS 1.77%

Overview

CVE-2006-6302 is a medium-severity vulnerability affecting fail2ban fail2ban. It was published on December 6, 2006 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from fail2ban. Update fail2ban to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
fail2banfail2ban0Affected

References

Refbugs.gentoo.org/show_bug.cgi?id=157166Refsecunia.com/advisories/23237Refsecunia.com/advisories/24184Refsecurity.gentoo.org/glsa/glsa-200702-05.xmlRefwww.securityfocus.com/bid/21469Refwww.vupen.com/english/advisories/2006/4877Refexchange.xforce.ibmcloud.com/vulnerabilities/30739Refbugs.gentoo.org/show_bug.cgi?id=157166Refsecunia.com/advisories/23237Refsecunia.com/advisories/24184

How CyberStrike helps

Frequently asked questions

What is CVE-2006-6302?

CVE-2006-6302 is a medium-severity vulnerability affecting fail2ban fail2ban. It was published on December 6, 2006 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2006-6302?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2006-6302?

Check the references section for vendor advisories and patches from fail2ban. Update fail2ban to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2006-6302?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2006-6302 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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