{"id":"CVE-2017-14955","aliases":["EUVD-2017-6431","GHSA-8qhg-c9h2-g6rj","UBUNTU-CVE-2017-14955","USN-5527-1","USN-5527-2"],"status":"published","title":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because...","description":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.12134,"percentile":0.96181,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-200","CWE-362"],"published":"2017-10-01T05:00:00Z","modified":"2026-10-24T10:30:21Z","exploits":[{"source":"exploitdb","id":"EDB-43021","title":"Check_MK 1.2.8p25 - Information Disclosure","type":"webapps","platform":"python","date":"2017-10-18","url":"https://www.exploit-db.com/exploits/43021"}],"fixes":[{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"check-mk","fixed_in":["1.2.6p12-1ubuntu0.16.04.1+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"check-mk","fixed_in":["1.2.8p16-1ubuntu0.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.6p12-1ubuntu0.16.04.1+esm1"}]}],"versions":["1.2.6p5-1","1.2.6p12-1","1.2.6p12-1ubuntu0.16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.8p16-1ubuntu0.2"}]}],"versions":["1.2.8p16-1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.8p16-1ubuntu0.2"}]}],"versions":["1.2.8p16-1ubuntu0.1"],"bundled":5},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.6p12-1ubuntu0.16.04.1+esm1"}]}],"versions":["1.2.6p5-1","1.2.6p12-1","1.2.6p12-1ubuntu0.16.04.1"],"bundled":4}],"products":[{"vendor":"checkmk","product":"checkmk"}],"references":[{"url":"https://www.exploit-db.com/exploits/43021/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"http://mathias-kettner.com/check_mk_werks.php?edition_id=raw\u0026branch=1.2.8","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Third Party Advisory","advisory","report"]},{"url":"https://mathias-kettner.de/check_mk_werks.php?werk_id=5208\u0026HTML=yes","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-14955"},{"url":"https://www.exploit-db.com/exploits/43021"},{"url":"https://github.com/advisories/GHSA-8qhg-c9h2-g6rj"},{"url":"https://ubuntu.com/security/CVE-2017-14955","tags":["report"]},{"url":"http://git.mathias-kettner.de/git/?p=check_mk.git;a=commitdiff;h=a4a2cc1f30ff6032899ca80eed29fa26b8898c54","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5527-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-14955","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5527-2","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-9781","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-36563","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-40906","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2022-24565","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-14955","description":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.","status":"published","published":"2017-10-01T05:00:00Z","modified":"2024-08-05T19:42:22.36Z","updated_at":"2026-11-02T14:33:12.267141Z"}],"euvd":[{"id":"EUVD-2017-6431","description":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.","status":"published","published":"2017-10-01T05:00:00Z","modified":"2024-08-05T19:42:22Z","updated_at":"2026-11-03T02:23:15.298105Z"}],"ghsa":[{"id":"GHSA-8qhg-c9h2-g6rj","title":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because...","description":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.","status":"published","published":"2022-05-13T01:31:06Z","modified":"2024-07-23T21:32:37Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:57:44.165395Z"}],"nvd":[{"id":"CVE-2017-14955","description":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.","status":"published","published":"2017-10-02T01:29:00.39Z","modified":"2026-06-17T01:07:02.813Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200","CWE-362"],"updated_at":"2026-11-02T14:04:01.734197Z"}],"osv":[{"id":"CVE-2017-14955","description":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.","status":"published","published":"2017-10-02T01:29:00.39Z","modified":"2026-10-24T10:30:21.730510656Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:04.572713Z"},{"id":"UBUNTU-CVE-2017-14955","description":"Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.","status":"published","published":"2017-10-02T01:29:00Z","modified":"2026-02-04T03:21:44.805346Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:14.563448Z"},{"id":"USN-5527-1","title":"check-mk vulnerabilities","description":"It was discovered that Checkmk incorrectly handled authentication. An attacker \ncould possibly use this issue to cause a race condition leading to information \ndisclosure. (CVE-2017-14955)\n\nIt was discovered that Checkmk incorrectly handled certain inputs. An attacker\ncould use these cross-site scripting issues to inject arbitrary html or \njavascript code to obtain sensitive information including user information, \nsession cookies and valid credentials. (CVE-2017-9781, CVE-2021-36563, \nCVE-2021-40906, CVE-2022-24565)\n","status":"published","published":"2022-07-20T08:36:48Z","modified":"2026-02-10T04:42:42Z","updated_at":"2026-11-02T16:58:16.20937Z"},{"id":"USN-5527-2","title":"check-mk vulnerabilities","description":"USN-5527-1 fixed vulnerabilities in Checkmk. This update provides the \ncorresponding update for Ubuntu 16.04 ESM.\n\nOriginal advisory details:\n\n It was discovered that Checkmk incorrectly handled authentication. An attacker \n could possibly use this issue to cause a race condition leading to information \n disclosure. (CVE-2017-14955)\n \n It was discovered that Checkmk incorrectly handled certain inputs. An attacker\n could use these cross-site scripting issues to inject arbitrary html or \n javascript code to obtain sensitive information including user information, \n session cookies and valid credentials. (CVE-2017-9781, CVE-2021-36563, \n CVE-2021-40906, CVE-2022-24565)\n","status":"published","published":"2022-07-20T10:26:46Z","modified":"2026-06-25T13:31:18.786666686Z","updated_at":"2026-11-02T16:58:16.20937Z"}]}}