{"id":"CVE-2018-7750","aliases":["GHSA-232r-66cg-79px","PYSEC-2018-19"],"url":"https://o3.security/vulnerability/CVE-2018-7750","summary":"Paramiko not properly checking authentication before processing other requests","details":"transport.py in the SSH server implementation of Paramiko before 1.17.6, 1.18.x before 1.18.5, 2.0.x before 2.0.8, 2.1.x before 2.1.5, 2.2.x before 2.2.3, 2.3.x before 2.3.2, and 2.4.x before 2.4.1 does not properly check whether authentication is completed before processing other requests, as demonstrated by channel-open. A customized SSH client can simply skip the authentication step.","published":"2018-03-13T18:29:00.303Z","modified":"2026-08-07T11:48:15.115676221Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":4,"affectedPackages":[{"ecosystem":"PyPI","name":"paramiko","fixedVersion":"2.0.8"},{"ecosystem":"PyPI","name":"paramiko","fixedVersion":"2.1.5"},{"ecosystem":"PyPI","name":"paramiko","fixedVersion":"2.2.3"},{"ecosystem":"PyPI","name":"paramiko","fixedVersion":"2.3.2"},{"ecosystem":"PyPI","name":"paramiko","fixedVersion":"2.4.1"},{"ecosystem":"PyPI","name":"paramiko","fixedVersion":"1.18.5"},{"ecosystem":"PyPI","name":"paramiko","fixedVersion":"1.17.6"}],"fix":{"url":"https://github.com/paramiko/paramiko/commit/fa29bd8446c8eab237f5187d28787727b4610516","label":"paramiko/paramiko@fa29bd8"},"references":[{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/103713"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:0591"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:0646"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1124"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1125"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1213"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1274"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1328"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1525"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:1972"},{"type":"ADVISORY","url":"https://github.com/paramiko/paramiko/blob/master/sites/www/changelog.rst"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/10/msg00018.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/12/msg00025.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3603-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3603-2/"},{"type":"REPORT","url":"https://github.com/paramiko/paramiko/issues/1175"},{"type":"FIX","url":"https://github.com/paramiko/paramiko/commit/fa29bd8446c8eab237f5187d28787727b4610516"},{"type":"EVIDENCE","url":"https://www.exploit-db.com/exploits/45712/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-7750"},{"type":"WEB","url":"https://github.com/paramiko/paramiko/commit/e9dfd854bdaf8af15d7834f7502a0451d217bb8c"},{"type":"WEB","url":"https://www.exploit-db.com/exploits/45712"},{"type":"WEB","url":"https://web.archive.org/web/20190831123128/http://www.securityfocus.com/bid/103713"},{"type":"WEB","url":"https://usn.ubuntu.com/3603-2"},{"type":"WEB","url":"https://usn.ubuntu.com/3603-1"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/paramiko/PYSEC-2018-19.yaml"},{"type":"WEB","url":"https://github.com/paramiko/paramiko/blob/e861c7697622774071ce73b46ffe8817eacdedfa/sites/www/changelog.rst?plain=1#L759-L763"},{"type":"PACKAGE","url":"https://github.com/paramiko/paramiko"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-232r-66cg-79px"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:48:15.115676221Z"}}