{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2013-4434","sourceIdentifier":"secalert@redhat.com","published":"2013-10-25T23:55:03.957","lastModified":"2026-06-16T23:57:13.417","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Dropbear SSH Server before 2013.59 generates error messages for a failed logon attempt with different time delays depending on whether the user account exists, which allows remote attackers to discover valid usernames."},{"lang":"es","value":"Dropbear SSH Server anterior a 2013.59 genera mensajes de error durante un intento de inicio de sesión fallido con diferentes retardos de tiempo en función de si existe la cuenta de usuario, lo que permite a atacantes remotos para descubrir los nombres de usuario válidos."}],"affected":[{"source":"secalert@redhat.com","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:N/A:N","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-189"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*","versionEndExcluding":"2013.59","matchCriteriaId":"EBC6AE23-FAEA-491F-806C-8D634FA765B0"}]}]}],"references":[{"url":"http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"http://secunia.com/advisories/55173","source":"secalert@redhat.com","tags":["Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2013/10/16/11","source":"secalert@redhat.com","tags":["Mailing List","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/62993","source":"secalert@redhat.com","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://matt.ucc.asn.au/dropbear/CHANGES","source":"secalert@redhat.com","tags":["Vendor Advisory"]},{"url":"https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a","source":"secalert@redhat.com","tags":["Patch","Third Party Advisory"]},{"url":"https://support.citrix.com/article/CTX216642","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"http://lists.opensuse.org/opensuse-updates/2013-10/msg00061.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"http://lists.opensuse.org/opensuse-updates/2013-11/msg00046.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]},{"url":"http://secunia.com/advisories/55173","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2013/10/16/11","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/62993","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"]},{"url":"https://matt.ucc.asn.au/dropbear/CHANGES","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://secure.ucc.asn.au/hg/dropbear/rev/d7784616409a","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://support.citrix.com/article/CTX216642","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}