{"id":"CVE-2021-43414","aliases":["EUVD-2021-30349","GHSA-gr2r-2j89-7xww"],"status":"published","title":"An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol...","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol in the proc server is vulnerable to man-in-the-middle attacks, which can be exploited for local privilege escalation to get full root access.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00293,"percentile":0.22189,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-863"],"published":"2021-11-07T17:06:46Z","modified":"2026-06-17T04:10:56Z","products":[{"vendor":"gnu","product":"hurd"}],"references":[{"url":"https://lists.gnu.org/archive/html/bug-hurd/2021-05/msg00079.html","tags":["x_refsource_MISC","x_transferred","Exploit","Mailing List","Vendor Advisory"]},{"url":"https://www.mail-archive.com/bug-hurd%40gnu.org/msg32114.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43414"},{"url":"https://www.mail-archive.com/bug-hurd@gnu.org/msg32114.html"},{"url":"https://github.com/advisories/GHSA-gr2r-2j89-7xww"}],"sources":{"cve":[{"id":"CVE-2021-43414","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol in the proc server is vulnerable to man-in-the-middle attacks, which can be exploited for local privilege escalation to get full root access.","status":"published","published":"2021-11-07T17:06:46Z","modified":"2024-08-04T03:55:28.659Z","updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30349","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol in the proc server is vulnerable to man-in-the-middle attacks, which can be exploited for local privilege escalation to get full root access.","status":"published","published":"2021-11-07T17:06:46Z","modified":"2024-08-04T03:55:28Z","updated_at":"2026-11-03T03:24:14.245608Z"}],"ghsa":[{"id":"GHSA-gr2r-2j89-7xww","title":"An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol...","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol in the proc server is vulnerable to man-in-the-middle attacks, which can be exploited for local privilege escalation to get full root access.","status":"published","published":"2022-05-24T19:19:55Z","modified":"2023-08-08T15:31:24Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:54:44.111289Z"}],"nvd":[{"id":"CVE-2021-43414","description":"An issue was discovered in GNU Hurd before 0.9 20210404-9. The use of an authentication protocol in the proc server is vulnerable to man-in-the-middle attacks, which can be exploited for local privilege escalation to get full root access.","status":"published","published":"2021-11-07T18:15:07.83Z","modified":"2026-06-17T04:10:56.553Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}