{"id":"CVE-2020-13977","aliases":["DEBIAN-CVE-2020-13977","EUVD-2020-6148","GHSA-c962-q9ch-7qhw","MGASA-2021-0209","UBUNTU-CVE-2020-13977","openSUSE-SU-2021:0715-1","openSUSE-SU-2021:0735-1","openSUSE-SU-2024:11073-1"],"status":"published","title":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for...","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for JSON CGIs\" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files. NOTE: this vulnerability has been mistakenly associated with CVE-2020-1408.","severity":{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02726,"percentile":0.86251,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-74","CWE-829"],"published":"2020-06-09T13:06:56Z","modified":"2026-10-26T12:02:26Z","fixes":[{"ecosystem":"Debian:12","package":"nagios4","fixed_in":["4.3.4-4"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"nagios4","fixed_in":["4.3.4-4"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"nagios4","fixed_in":["4.3.4-4"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"nagios","fixed_in":["4.4.3-2.1.mga7"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"nagios4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-4"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"nagios4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-4"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"nagios4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-4"}]}]},{"source":"osv","ecosystem":"Mageia:7","package":"nagios","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.3-2.1.mga7"}]}]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"nagios4","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.4-3","4.3.4-3ubuntu0.1"]},{"source":"osv","ecosystem":"openSUSE:Leap 15.2","package":"nagios","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.6-lp152.2.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP2","package":"nagios","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.6-bp152.2.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"nagios","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.4.6-2.5"}]}],"bundled":17}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"nagios","product":"nagios"}],"references":[{"url":"https://anhtai.me/nagios-core-4-4-5-url-injection/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://www.nagios.org/projects/nagios-core/history/4x/","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","report"]},{"url":"https://github.com/sawolf/nagioscore/tree/url-injection-fix","tags":["x_refsource_MISC","x_transferred","Product","Third Party Advisory","advisory","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H7T6MSDWMBJEVVFSOK7DOYJJWDAFQCEQ/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUEIABR4Y6L5J5MZDFWU46ZWXMJO64U3/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5P6NHNG2SJAM6DXVTXQH3AOJ4WQVKJUE/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13977"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5P6NHNG2SJAM6DXVTXQH3AOJ4WQVKJUE/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/H7T6MSDWMBJEVVFSOK7DOYJJWDAFQCEQ/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JUEIABR4Y6L5J5MZDFWU46ZWXMJO64U3/"},{"url":"https://github.com/advisories/GHSA-c962-q9ch-7qhw"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-13977","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2021-0209.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=28557","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/JUEIABR4Y6L5J5MZDFWU46ZWXMJO64U3/","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2020-13977","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-13977","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/RCXDSKLLDI4CG7PLAOOYGYVNNNQLL5WP/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1003362","tags":["report"]},{"url":"https://bugzilla.suse.com/1014637","tags":["report"]},{"url":"https://bugzilla.suse.com/1172794","tags":["report"]},{"url":"https://bugzilla.suse.com/1182398","tags":["report"]},{"url":"https://bugzilla.suse.com/989759","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2016-6209","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-13977","tags":["web"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/ZGYA3HEIHYY2MWEAOFFMZUBPGWKUXYI2/","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2006-2162","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2007-5803","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2008-4796","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2011-1523","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-2214","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4214","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-7108","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-1878","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-0726","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-8641","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2016-9566","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-12847","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-13441","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-18245","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-3698","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2020-13977","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for JSON CGIs\" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files. NOTE: this vulnerability has been mistakenly associated with CVE-2020-1408.","status":"published","published":"2020-06-09T13:06:56Z","modified":"2024-08-04T12:32:14.607Z","updated_at":"2026-11-02T14:35:53.868619Z"}],"euvd":[{"id":"EUVD-2020-6148","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for JSON CGIs\" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files. NOTE: this vulnerability has been mistakenly associated with CVE-2020-1408.","status":"published","published":"2020-06-09T13:06:56Z","modified":"2024-08-04T12:32:14Z","updated_at":"2026-11-03T03:07:35.697348Z"}],"ghsa":[{"id":"GHSA-c962-q9ch-7qhw","title":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for...","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for JSON CGIs\" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files.","status":"published","published":"2022-05-24T17:19:37Z","modified":"2023-01-29T05:03:08Z","cwes":["CWE-74"],"updated_at":"2026-11-02T14:45:15.109911Z"}],"nvd":[{"id":"CVE-2020-13977","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for JSON CGIs\" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files. NOTE: this vulnerability has been mistakenly associated with CVE-2020-1408.","status":"published","published":"2020-06-09T14:15:10.063Z","modified":"2026-06-17T02:54:02.65Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-829"],"updated_at":"2026-11-02T14:06:05.962132Z"}],"osv":[{"id":"CVE-2020-13977","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for JSON CGIs\" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files. NOTE: this vulnerability has been mistakenly associated with CVE-2020-1408.","status":"published","published":"2020-06-09T14:15:10.063Z","modified":"2026-10-24T10:30:53.738412038Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:14.418339Z"},{"id":"DEBIAN-CVE-2020-13977","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for JSON CGIs\" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files. NOTE: this vulnerability has been mistakenly associated with CVE-2020-1408.","status":"published","published":"2020-06-09T14:15:10.063Z","modified":"2026-10-26T12:02:26.083742526Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:32.862554Z"},{"id":"UBUNTU-CVE-2020-13977","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to change the \"URL for JSON CGIs\" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files. NOTE: this vulnerability has been mistakenly associated with CVE-2020-1408.","status":"published","published":"2020-06-09T14:15:00Z","modified":"2025-10-24T04:48:31Z","cvss":[{"version":"3.1","score":4.9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:22.804634Z"},{"id":"MGASA-2021-0209","title":"Updated nagios packages fix a security vulnerability","description":"Nagios 4.4.5 allows an attacker, who already has administrative access to\nchange the \"URL for JSON CGIs\" configuration setting, to modify the Alert\nHistogram and Trends code via crafted versions of the archivejson.cgi,\nobjectjson.cgi, and statusjson.cgi files (CVE-2020-13977).\n","status":"published","published":"2021-05-12T09:56:40Z","modified":"2026-04-16T04:41:58.103006886Z","updated_at":"2026-11-02T15:49:41.509337Z"},{"id":"openSUSE-SU-2021:0715-1","title":"Security update for nagios","description":"This update for nagios fixes the following issues:\n\n- new nagios-exec-start-post script to fix boo#1003362\n\n- fix nagios_upgrade.sh writing to log file in user controlled \n  directory (boo#1182398). The nagios_upgrade.sh script writes the \n  logfile directly below /var/log/ \n\nnagios was updated to 4.4.6:\n\n* Fixed Map display in Internet Explorer 11 (#714)\n* Fixed duplicate properties appearing in statusjson.cgi (#718)\n* Fixed NERD not building when enabled in ./configure (#723)\n* Fixed build process when using GCC 10 (#721)\n* Fixed postauth vulnerabilities in histogram.js, map.js, trends.js \n  (CVE-2020-13977, boo#1172794)\n* When using systemd, configuration will be verified before\n  reloading (#715)\n* Fixed HARD OK states triggering on the maximum check attempt (#757)\n\n* Fix for CVE-2016-6209 (boo#989759) - The 'corewindow' parameter (as in bringing this to our attention go to Dawid Golunski (boo#1014637)\n","status":"published","published":"2021-05-12T15:02:21Z","modified":"2026-02-04T02:31:00.637563Z","updated_at":"2026-11-02T16:58:31.879684Z"},{"id":"openSUSE-SU-2021:0735-1","title":"Security update for nagios","description":"This update for nagios fixes the following issues:\n\n- new nagios-exec-start-post script to fix boo#1003362\n\n- fix nagios_upgrade.sh writing to log file in user controlled \n  directory (boo#1182398). The nagios_upgrade.sh script writes the \n  logfile directly below /var/log/ \n\nnagios was updated to 4.4.6:\n\n* Fixed Map display in Internet Explorer 11 (#714)\n* Fixed duplicate properties appearing in statusjson.cgi (#718)\n* Fixed NERD not building when enabled in ./configure (#723)\n* Fixed build process when using GCC 10 (#721)\n* Fixed postauth vulnerabilities in histogram.js, map.js, trends.js \n  (CVE-2020-13977, boo#1172794)\n* When using systemd, configuration will be verified before\n  reloading (#715)\n* Fixed HARD OK states triggering on the maximum check attempt (#757)\n\n* Fix for CVE-2016-6209 (boo#989759) - The 'corewindow' parameter (as in bringing this to our attention go to Dawid Golunski (boo#1014637)\n\nThis update was imported from the openSUSE:Leap:15.2:Update update project.","status":"published","published":"2021-05-15T22:05:05Z","modified":"2026-02-04T03:28:31.218172Z","updated_at":"2026-11-02T16:58:31.879684Z"},{"id":"openSUSE-SU-2024:11073-1","title":"nagios-4.4.6-2.5 on GA media","description":"These are all security issues fixed in the nagios-4.4.6-2.5 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:08:19.000922Z","updated_at":"2026-11-02T16:58:34.894275Z"}]}}