{"id":"CVE-2006-6301","url":"https://www.cyber-defence.io/tools/cve/CVE-2006-6301","generatedAt":"2026-10-27T21:41:42.537Z","title":"DenyHosts 2.5 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…","description":"DenyHosts 2.5 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, which is not properly handled by a regular expression.","published":"2006-12-06T19:28:00.000Z","lastModified":"2026-06-16T22:32:53.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P"},"cwe":[],"affected":["denyhosts/denyhosts"],"epss":{"score":0.01885,"percentile":0.79349,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.88%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://bugs.gentoo.org/show_bug.cgi?id=157163","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/23236","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://secunia.com/advisories/23603","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://security.gentoo.org/glsa/glsa-200701-01.xml","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/21468","source":"cve@mitre.org"},{"url":"http://www.vupen.com/english/advisories/2006/4876","source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/30761","source":"cve@mitre.org"},{"url":"http://bugs.gentoo.org/show_bug.cgi?id=157163","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/23236","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/23603","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://security.gentoo.org/glsa/glsa-200701-01.xml","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/21468","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2006/4876","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/30761","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2006-6301","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}