CVE-2006-6301

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:denyhosts:denyhosts:2.5:*:*:*:*:*:*:*", "matchCriteriaId": "1938273B-F140-475E-BD81-C714CA6590D5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "DenyHosts 2.5 no realiza un an\u00e1lisis sint\u00e1ctico adecuado de los ficheros de log de sshd, lo cual permite a atacantes remotos a\u00f1adir hosts de su elecci\u00f3n al fichero /etc/hosts.deny y provocar una denegaci\u00f3n de servicio a\u00f1adiendo direcciones IP de su elecci\u00f3n al fichero de log de sshd; como se ha demostrado accediendo por ssh utilizando un nombre de acceso que contiene ciertas cadenas con una direcci\u00f3n IP, lo cual no es tratado adecuadamente por una expresi\u00f3n regular."}], "id": "CVE-2006-6301", "lastModified": "2026-06-16T22:32:52.647", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2006-12-06T19:28:00.000", "references": [{"source": "cve@mitre.org", "tags": ["Exploit"], "url": "http://bugs.gentoo.org/show_bug.cgi?id=157163"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/23236"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/23603"}, {"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": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit"], "url": "http://bugs.gentoo.org/show_bug.cgi?id=157163"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/23236"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/23603"}, {"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"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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