{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2013-12-22T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "denyhosts 2.6 uses an incorrect regular expression when analyzing authentication logs, which allows remote attackers to cause a denial of service (incorrect block of IP addresses) via crafted login names."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2013-12-23T21:57:01.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"name": "56239", "tags": ["third-party-advisory", "x_refsource_SECUNIA"], "url": "http://secunia.com/advisories/56239"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1045982"}, {"name": "[oss-security] 20131222 Re: [SECURITY] [DSA 2826-1] denyhosts security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://seclists.org/oss-sec/2013/q4/535"}, {"name": "DSA-2826", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "http://www.debian.org/security/2013/dsa-2826"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2013-6890", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "denyhosts 2.6 uses an incorrect regular expression when analyzing authentication logs, which allows remote attackers to cause a denial of service (incorrect block of IP addresses) via crafted login names."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "56239", "refsource": "SECUNIA", "url": "http://secunia.com/advisories/56239"}, {"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1045982", "refsource": "MISC", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1045982"}, {"name": "[oss-security] 20131222 Re: [SECURITY] [DSA 2826-1] denyhosts security update", "refsource": "MLIST", "url": "http://seclists.org/oss-sec/2013/q4/535"}, {"name": "DSA-2826", "refsource": "DEBIAN", "url": "http://www.debian.org/security/2013/dsa-2826"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T17:53:44.689Z"}, "title": "CVE Program Container", "references": [{"name": "56239", "tags": ["third-party-advisory", "x_refsource_SECUNIA", "x_transferred"], "url": "http://secunia.com/advisories/56239"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1045982"}, {"name": "[oss-security] 20131222 Re: [SECURITY] [DSA 2826-1] denyhosts security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://seclists.org/oss-sec/2013/q4/535"}, {"name": "DSA-2826", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "http://www.debian.org/security/2013/dsa-2826"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2013-6890", "datePublished": "2013-12-23T22:00:00.000Z", "dateReserved": "2013-11-28T00:00:00.000Z", "dateUpdated": "2024-08-06T17:53:44.689Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*", "matchCriteriaId": "036E8A89-7A16-411F-9D31-676313BB7244", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:7.1:*:*:*:*:*:*:*", "matchCriteriaId": "7B21E9A8-CE63-42C2-A11A-94D977A96DF1", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*", "matchCriteriaId": "20294CE7-12C8-43CA-A702-5ED2A3044FFC", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:phil_schwartz:denyhosts:2.6:*:*:*:*:*:*:*", "matchCriteriaId": "B8215831-4E32-4451-AB45-598B8F5620A9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "denyhosts 2.6 uses an incorrect regular expression when analyzing authentication logs, which allows remote attackers to cause a denial of service (incorrect block of IP addresses) via crafted login names."}, {"lang": "es", "value": "denyhosts v2.6 utiliza una expresi\u00f3n regular incorrecta al analizar los registros de autenticaci\u00f3n, , lo cual permite a atacantes remotos causar una denegaci\u00f3n de servicio (secuencia incorrecta de direcciones IP) a trav\u00e9s de nombres de inicio de sesi\u00f3n manipulados."}], "id": "CVE-2013-6890", "lastModified": "2026-04-29T01:13:23.040", "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": "2013-12-23T22:55:03.050", "references": [{"source": "cve@mitre.org", "url": "http://seclists.org/oss-sec/2013/q4/535"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/56239"}, {"source": "cve@mitre.org", "url": "http://www.debian.org/security/2013/dsa-2826"}, {"source": "cve@mitre.org", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1045982"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://seclists.org/oss-sec/2013/q4/535"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://secunia.com/advisories/56239"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2013/dsa-2826"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1045982"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}