{"id":"CVE-2015-3206","aliases":["GHSA-mffc-9gx5-99g3","PYSEC-2017-49","PYSEC-2017-66"],"url":"https://o3.security/vulnerability/CVE-2015-3206","summary":"python-kerberos vulnerable to KDC spoofing attacks","details":"The checkPassword function in python-kerberos does not authenticate the KDC it attempts to communicate with, which allows remote attackers to cause a denial of service (bad response), or have other unspecified impact by performing a man-in-the-middle attack.","published":"2017-08-25T18:29:00Z","modified":"2026-04-10T03:46:17.768098Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"kerberos","fixedVersion":null},{"ecosystem":"PyPI","name":"pykerberos","fixedVersion":"1.1.6"}],"fix":{"url":"https://github.com/apple/ccs-pykerberos/commit/9cb61c93f9b24dd18a0a315f3df5445529c5c333","label":"apple/ccs-pykerberos@9cb61c9"},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2015/05/21/3"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/74760"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1223802"},{"type":"ADVISORY","url":"https://github.com/apple/ccs-pykerberos/issues/31"},{"type":"ADVISORY","url":"https://pypi.python.org/pypi/kerberos"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-3206"},{"type":"WEB","url":"https://github.com/apple/ccs-pykerberos/commit/9cb61c93f9b24dd18a0a315f3df5445529c5c333"},{"type":"PACKAGE","url":"https://github.com/apple/ccs-pykerberos"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/kerberos/PYSEC-2017-49.yaml"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/pykerberos/PYSEC-2017-66.yaml"},{"type":"WEB","url":"https://web.archive.org/web/20150910143429/https://trac.calendarserver.org/ticket/833"},{"type":"WEB","url":"https://web.archive.org/web/20200228090829/http://www.securityfocus.com/bid/74760"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-04-10T03:46:17.768098Z"}}