{"id":"CVE-2019-11455","aliases":["ALPINE-CVE-2019-11455","DEBIAN-CVE-2019-11455","DLA-1767-1","DLA-2855-1","EUVD-2019-3130","GHSA-7vr9-r7gj-5r8q","MGASA-2019-0246","UBUNTU-CVE-2019-11455","USN-4860-1"],"status":"published","title":"Buffer overflow","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02879,"percentile":0.86946,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2019-04-22T00:00:00Z","modified":"2026-10-20T13:56:15Z","fixes":[{"ecosystem":"Alpine:v3.7","package":"monit","fixed_in":["5.24.0-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.8","package":"monit","fixed_in":["5.25.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"monit","fixed_in":["5.25.2-r1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"monit","fixed_in":["1:5.25.3-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"monit","fixed_in":["1:5.25.3-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"monit","fixed_in":["1:5.25.3-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"monit","fixed_in":["1:5.6-2ubuntu0.1+esm2"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"monit","fixed_in":["1:5.16-2ubuntu0.2+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"monit","fixed_in":["1:5.25.1-1ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.7","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.24.0-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.8","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.25.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.9","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.25.2-r1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.25.3-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.25.3-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.25.3-1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.9-1+deb8u2"}]}],"versions":["1:5.9-1","1:5.9-1+deb8u1"],"bundled":2},{"source":"osv","ecosystem":"Debian:9","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.20.0-6+deb9u2"}]}],"versions":["1:5.20.0-6","1:5.20.0-6+deb9u1"],"bundled":2},{"source":"osv","ecosystem":"Mageia:6","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.25.3-1.1.mga6"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.6-2ubuntu0.1+esm2"}]}],"versions":["1:5.5.1-1","1:5.6-1","1:5.6-2","1:5.6-2ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.16-2ubuntu0.2+esm1"}]}],"versions":["1:5.14-2","1:5.15-1","1:5.15-2","1:5.15-3","1:5.16-1","1:5.16-2","1:5.16-2ubuntu0.1","1:5.16-2ubuntu0.2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.25.1-1ubuntu0.1~esm1"}]}],"versions":["1:5.23.0-2","1:5.23.0-4","1:5.25.1-1","1:5.25.1-1build1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.6-2ubuntu0.1+esm2"}]}],"versions":["1:5.5.1-1","1:5.6-1","1:5.6-2","1:5.6-2ubuntu0.1"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.16-2ubuntu0.2+esm1"}]}],"versions":["1:5.14-2","1:5.15-1","1:5.15-2","1:5.15-3","1:5.16-1","1:5.16-2","1:5.16-2ubuntu0.1","1:5.16-2ubuntu0.2"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"monit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:5.25.1-1ubuntu0.1~esm1"}]}],"versions":["1:5.23.0-2","1:5.23.0-4","1:5.25.1-1","1:5.25.1-1build1"],"bundled":2}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"debian","product":"debian_linux"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"tildeslash","product":"monit"}],"references":[{"url":"https://bitbucket.org/tildeslash/monit/commits/f12d0cdb42d4e74dffe1525d4062c815c48ac57a","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/dzflack/exploits/blob/master/unix/monit_buffer_overread.py","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://github.com/dzflack/exploits/blob/master/macos/monit_dos.py","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2019/04/msg00028.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://usn.ubuntu.com/3971-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L475QJMFFI2QV5QEHAKKPVX6QX6ECUL6/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZQDHRSKTEX5MSYXNCGFTUSFGANBARHX/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/12/msg00018.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-11455"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HZQDHRSKTEX5MSYXNCGFTUSFGANBARHX/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L475QJMFFI2QV5QEHAKKPVX6QX6ECUL6/"},{"url":"https://github.com/advisories/GHSA-7vr9-r7gj-5r8q"},{"url":"https://security.alpinelinux.org/vuln/CVE-2019-11455","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-11455","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2019-0246.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=25269","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2019-11455","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-3971-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-4860-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-11455","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2019-11454","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-11455","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","status":"published","published":"2019-04-22T15:06:12Z","modified":"2024-08-04T22:55:40.222Z","updated_at":"2026-11-02T14:20:26.416173Z"}],"euvd":[{"id":"EUVD-2019-3130","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","status":"published","published":"2019-04-22T15:06:12Z","modified":"2024-08-04T22:55:40Z","updated_at":"2026-11-03T02:40:49.362838Z"}],"ghsa":[{"id":"GHSA-7vr9-r7gj-5r8q","title":"Buffer overflow","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","status":"published","published":"2022-05-24T21:59:43Z","modified":"2023-01-30T05:03:52Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:46:55.674273Z"}],"nvd":[{"id":"CVE-2019-11455","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","status":"published","published":"2019-04-22T16:29:01.6Z","modified":"2026-06-17T02:12:55.707Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:05:12.471695Z"}],"osv":[{"id":"ALPINE-CVE-2019-11455","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","status":"published","published":"2019-04-22T16:29:01.6Z","modified":"2026-09-21T06:17:52.458575771Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:27:47.663013Z"},{"id":"CVE-2019-11455","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","status":"published","published":"2019-04-22T16:29:01.6Z","modified":"2026-10-20T13:56:15.92747094Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:10.718934Z"},{"id":"DEBIAN-CVE-2019-11455","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","status":"published","published":"2019-04-22T16:29:01.6Z","modified":"2026-09-21T07:00:37.111562224Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:31.170944Z"},{"id":"UBUNTU-CVE-2019-11455","description":"A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).","status":"published","published":"2019-04-22T00:00:00Z","modified":"2026-02-04T03:38:31.663385Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"},{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:19.202697Z"},{"id":"DLA-1767-1","title":"monit - security update","status":"published","published":"2019-04-26T00:00:00Z","modified":"2026-03-09T01:17:46.862421Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DLA-2855-1","title":"monit - security update","status":"published","published":"2021-12-27T00:00:00Z","modified":"2026-03-09T01:22:17.386185Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"MGASA-2019-0246","title":"Updated monit packages fix security vulnerabilities","description":"Updated monit package fixes security vulnerabilities:\n\nZack Flack discovered that Monit incorrectly handled certain input.\nA remote authenticated user could exploit this to conduct cross-site\nscripting (XSS) attacks (CVE-2019-11454).\n\nZack Flack discovered a buffer overread when Monit decoded certain crafted\nURLs. An attacker could exploit this to leak potentially sensitive\ninformation (CVE-2019-11455).\n","status":"published","published":"2019-09-06T21:09:08Z","modified":"2026-04-16T04:43:24.970820248Z","updated_at":"2026-11-02T15:49:40.793816Z"},{"id":"USN-4860-1","title":"monit vulnerabilities","description":"Zack Flack discovered that Monit incorrectly handled certain input. A\nremote authenticated user could exploit this to conduct cross-site\nscripting (XSS) attacks. (CVE-2019-11454)\n\nZack Flack discovered a buffer overread when Monit decoded certain crafted\nURLs. An attacker could exploit this to potentially leak sensitive\ninformation. (CVE-2019-11455)\n","status":"published","published":"2021-03-15T22:47:51Z","modified":"2026-06-29T13:48:00.234460494Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}