{"id":"CVE-2019-11366","aliases":["DEBIAN-CVE-2019-11366","DLA-1783-1","DSA-4438-1","EUVD-2019-3044","GHSA-4hq6-rhmw-hgw9","SUSE-SU-2019:1091-1","SUSE-SU-2019:14033-1","UBUNTU-CVE-2019-11366","USN-4540-1","USN-4643-1"],"status":"published","title":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex...","description":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02098,"percentile":0.81821,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2019-04-20T12:58:09Z","modified":"2026-09-21T07:01:25Z","fixes":[{"ecosystem":"Debian:12","package":"atftp","fixed_in":["0.7.git20120829-3.1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"atftp","fixed_in":["0.7.git20120829-3.1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"atftp","fixed_in":["0.7.git20120829-3.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"atftp","fixed_in":["0.7.git20120829-3.1~0.16.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"atftp","fixed_in":["0.7.git20120829-3.1~0.18.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-1+deb8u1"}]}],"versions":["0.7.git20120829-1"],"bundled":2},{"source":"osv","ecosystem":"Debian:9","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~deb9u1"}]}],"versions":["0.7.git20120829-3"],"bundled":2},{"source":"osv","ecosystem":"SUSE:OpenStack Cloud 7","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Desktop 12 SP3","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Desktop 12 SP4","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP1","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP2","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12-LTSS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP1-LTSS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP2-LTSS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP2-BCL","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP3","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP3","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP4","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP4","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Enterprise Storage 4","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-160.8.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Point of Sale 11 SP3","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-135.23.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 11 SP4-LTSS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.0-135.23.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.16.04.1"}]}],"versions":["0.7.git20120829-2.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.18.04.1"}]}],"versions":["0.7.git20120829-3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.18.04.1"}]}],"versions":["0.7.git20120829-3"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.16.04.1"}]}],"versions":["0.7.git20120829-2.1"],"bundled":2}],"products":[{"vendor":"atftp_project","product":"atftp"}],"references":[{"url":"https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://www.debian.org/security/2019/dsa-4438","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"https://seclists.org/bugtraq/2019/May/16","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2019/05/msg00012.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/202003-14","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://usn.ubuntu.com/4540-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-11366"},{"url":"https://github.com/advisories/GHSA-4hq6-rhmw-hgw9"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-11366","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20191091-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1133114","tags":["report"]},{"url":"https://bugzilla.suse.com/1133145","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2019-11365","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-11366","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-201914033-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-11366","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4540-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-4643-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-11366","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2019-11365","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-11366","description":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.","status":"published","published":"2019-04-20T12:58:09Z","modified":"2024-08-04T22:48:09.221Z","updated_at":"2026-11-02T14:20:26.416173Z"}],"euvd":[{"id":"EUVD-2019-3044","description":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.","status":"published","published":"2019-04-20T12:58:09Z","modified":"2024-08-04T22:48:09Z","updated_at":"2026-11-03T02:40:49.362838Z"}],"ghsa":[{"id":"GHSA-4hq6-rhmw-hgw9","title":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex...","description":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.","status":"published","published":"2022-05-24T16:44:01Z","modified":"2023-01-28T05:05:25Z","updated_at":"2026-11-02T14:44:20.513282Z"}],"nvd":[{"id":"CVE-2019-11366","description":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.","status":"published","published":"2019-04-20T13:29:00.637Z","modified":"2026-06-17T02:12:47.383Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:05:11.426883Z"}],"osv":[{"id":"CVE-2019-11366","description":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.","status":"published","published":"2019-04-20T13:29:00.637Z","modified":"2026-03-15T22:26:49.61693Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:10.383287Z"},{"id":"DEBIAN-CVE-2019-11366","description":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.","status":"published","published":"2019-04-20T13:29:00.637Z","modified":"2026-09-21T07:01:25.651362541Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:31.170944Z"},{"id":"UBUNTU-CVE-2019-11366","description":"An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current-\u003enext.","status":"published","published":"2019-04-20T13:29:00Z","modified":"2026-02-04T03:28:01.05137Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:19.202697Z"},{"id":"DLA-1783-1","title":"atftp - security update","status":"published","published":"2019-05-12T00:00:00Z","modified":"2026-03-09T01:22:14.796659Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"DSA-4438-1","title":"atftp - security update","status":"published","published":"2019-05-07T00:00:00Z","modified":"2026-03-09T02:10:35.787969Z","updated_at":"2026-11-02T15:46:16.862196Z"},{"id":"SUSE-SU-2019:1091-1","title":"Security update for atftp","description":"This update for atftp fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2019-11366: Fixed a denial of service caused by a NULL pointer dereference because thread_list_mutex was not locked (bsc#1133145).\n- CVE-2019-11365: Fixed a buffer overflow which could lead to remote code execution caused by an insecure use of strncpy() (bsc#1133114).\n","status":"published","published":"2019-04-29T12:34:16Z","modified":"2026-02-04T04:24:49.376549Z","updated_at":"2026-11-02T15:53:45.926331Z"},{"id":"SUSE-SU-2019:14033-1","title":"Security update for atftp","description":"This update for atftp fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2019-11366: Fixed a denial of service caused by a NULL pointer dereference because thread_list_mutex was not locked (bsc#1133145).\n- CVE-2019-11365: Fixed a buffer overflow which could lead to remote code execution caused by an insecure use of strncpy() (bsc#1133114).\n","status":"published","published":"2019-04-29T12:39:21Z","modified":"2026-02-04T02:29:35.212826Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"USN-4540-1","title":"atftp vulnerabilities","description":"Denis Andzakovic discovered that atftpd incorrectly handled certain\nmalformed packets. A remote attacker could send a specially crafted packet\nto cause atftpd to crash, resulting in a denial of service.\n(CVE-2019-11365)\n\nDenis Andzakovic discovered that atftpd did not properly lock the thread\nlist mutex. An attacker could send a large number of tftpd packets\nsimultaneously when running atftpd in daemon mode to cause atftpd to\ncrash, resulting in a denial of service. (CVE-2019-11366)\n","status":"published","published":"2020-09-24T20:40:23Z","modified":"2026-02-10T04:41:56Z","updated_at":"2026-11-02T16:58:14.547547Z"},{"id":"USN-4643-1","title":"atftp vulnerabilities","description":"It was discovered that atftp's FTP server did not properly handler certain\ninput. An attacker could use this to to cause a denial of service (crash)\nor possibly execute arbitrary code. (CVE-2019-11365)\n\nIt was discovered that atftp's FTP server did not make proper use of\nmutexes when locking certain data structures. An attacker could use this to\ncause a denial of service via a NULL pointer dereference. (CVE-2019-11366)\n","status":"published","published":"2020-11-24T14:14:50Z","modified":"2026-02-10T04:41:59Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}