{"id":"CVE-2019-20176","aliases":["DEBIAN-CVE-2019-20176","EUVD-2019-10730","GHSA-fgwh-frh9-vm43","MGASA-2020-0128","UBUNTU-CVE-2019-20176","openSUSE-SU-2024:11773-1"],"status":"published","title":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","description":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.04365,"percentile":0.91313,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2019-12-31T14:04:06Z","modified":"2026-10-20T13:56:51Z","exploits":[{"source":"nuclei","id":"CVE-2019-20176","title":"Pure-FTPd \u003c 1.0.50 - DoS via Resource Exhaustion","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/network/cves/2019/CVE-2019-20176.yaml"}],"fixes":[{"ecosystem":"Debian:12","package":"pure-ftpd","fixed_in":["1.0.49-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"pure-ftpd","fixed_in":["1.0.49-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"pure-ftpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.49-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"pure-ftpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.49-2"}]}]},{"source":"osv","ecosystem":"Mageia:7","package":"pure-ftpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.47-7.mga7"}]}],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"pure-ftpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.36-3.2","1.0.36-3.2build1","1.0.36-3.2+deb8u1build0.16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"pure-ftpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.46-1","1.0.46-1build1","1.0.46-1ubuntu18.04.1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"pure-ftpd","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.50-1.1"}]}],"bundled":4}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"pureftpd","product":"pure-ftpd"}],"references":[{"url":"https://github.com/jedisct1/pure-ftpd/commit/aea56f4bcb9948d456f3fae4d044fd3fa2e19706","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PICL3U2J4EPGBLOE555Y5RAZTQL3WBBV/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AHZG5FPCRMCB6Z3L7FPICC6BZ5ZATFTO/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20176"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AHZG5FPCRMCB6Z3L7FPICC6BZ5ZATFTO/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PICL3U2J4EPGBLOE555Y5RAZTQL3WBBV/"},{"url":"https://github.com/advisories/GHSA-fgwh-frh9-vm43"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-20176","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2020-0128.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=26229","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2019-20176","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20176","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2019-20176","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-9274","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-9365","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-40524","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2019-20176","description":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","status":"published","published":"2019-12-31T14:04:06Z","modified":"2024-08-05T02:39:09.091Z","updated_at":"2026-11-02T14:20:17.431882Z"}],"euvd":[{"id":"EUVD-2019-10730","description":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","status":"published","published":"2019-12-31T14:04:06Z","modified":"2024-08-05T02:39:09Z","updated_at":"2026-11-03T02:40:22.702411Z"}],"ghsa":[{"id":"GHSA-fgwh-frh9-vm43","title":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","description":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","status":"published","published":"2022-05-24T17:05:26Z","modified":"2023-01-20T21:30:27Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:41:42.013329Z"}],"nvd":[{"id":"CVE-2019-20176","description":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","status":"published","published":"2019-12-31T15:15:11.223Z","modified":"2026-06-17T02:30:09.983Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:05:41.313583Z"}],"osv":[{"id":"CVE-2019-20176","description":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","status":"published","published":"2019-12-31T15:15:11.223Z","modified":"2026-10-20T13:56:51.86038012Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:12.010761Z"},{"id":"DEBIAN-CVE-2019-20176","description":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","status":"published","published":"2019-12-31T15:15:11.223Z","modified":"2026-09-21T07:02:36.96136018Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:32.221385Z"},{"id":"UBUNTU-CVE-2019-20176","description":"In Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir function in ls.c.","status":"published","published":"2019-12-31T15:15:00Z","modified":"2025-10-24T04:48:08Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:21.213407Z"},{"id":"MGASA-2020-0128","title":"Updated pure-ftpd packages fix security vulnerabilities","description":"Updated pure-ftpd packages fix security vulnerabilities:\n\nAn issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer\nvulnerability has been detected in the diraliases linked list. When the\n*lookup_alias(const char alias) or print_aliases(void) function is called,\nthey fail to correctly detect the end of the linked list and try to access\na non-existent list member. This is related to init_aliases in diraliases.c.\n(CVE-2019-9274).\n\nAn issue was discovered in Pure-FTPd 1.0.49. An out-of-bounds (OOB) read has\nbeen detected in the pure_strcmp function in utils.c (CVE-2019-9365).\n\nIn Pure-FTPd 1.0.49, a stack exhaustion issue was discovered in the listdir\nfunction in ls.c (CVE-2019-20176).\n","status":"published","published":"2020-03-06T16:13:58Z","modified":"2026-04-16T04:43:47.501407506Z","updated_at":"2026-11-02T15:49:41.151324Z"},{"id":"openSUSE-SU-2024:11773-1","title":"pure-ftpd-1.0.50-1.1 on GA media","description":"These are all security issues fixed in the pure-ftpd-1.0.50-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:54:55.543403Z","updated_at":"2026-11-02T16:58:35.195147Z"}]}}