{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2018-15599","sourceIdentifier":"cve@mitre.org","published":"2018-08-21T01:29:00.350","lastModified":"2026-06-17T01:42:49.183","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because username validity affects how fields in SSH_MSG_USERAUTH messages are handled, a similar issue to CVE-2018-15473 in an unrelated codebase."},{"lang":"es","value":"La función recv_msg_userauth_request en svr-auth.c en Dropbear hasta la versión 2018.76 es propensa a una vulnerabilidad de enumeración de usuarios porque la validez de los nombres de usuarios afecta a cómo se manejan los campos en los mensajes SSH_MSG_USERAUTH. Este problema es similar a CVE-2018-15473 en una base de código no relacionada."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV30":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4}],"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-200"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:dropbear_ssh_project:dropbear_ssh:*:*:*:*:*:*:*:*","versionEndIncluding":"2018.76","matchCriteriaId":"1967F3CC-83D8-4867-AC55-EE54A12E0332"}]}]}],"references":[{"url":"http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.html","source":"cve@mitre.org","tags":["Mailing List","Third Party Advisory"]},{"url":"http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.html","source":"cve@mitre.org","tags":["Mailing List","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/08/msg00026.html","source":"cve@mitre.org","tags":["Mailing List","Third Party Advisory"]},{"url":"https://matt.ucc.asn.au/dropbear/CHANGES","source":"cve@mitre.org"},{"url":"https://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/","source":"cve@mitre.org","tags":["Third Party Advisory"]},{"url":"http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002108.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]},{"url":"http://lists.ucc.gu.uwa.edu.au/pipermail/dropbear/2018q3/002109.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2018/08/msg00026.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]},{"url":"https://matt.ucc.asn.au/dropbear/CHANGES","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://old.reddit.com/r/blackhat/comments/97ywnm/openssh_username_enumeration/e4e05n2/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}