{"id":"CVE-2021-40491","aliases":["DEBIAN-CVE-2021-40491","DLA-3205-1","EUVD-2021-27668","GHSA-qw8r-vcwc-vjc9","UBUNTU-CVE-2021-40491","USN-5177-1"],"status":"published","title":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV...","description":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00991,"percentile":0.62829,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-345"],"published":"2021-09-03T00:00:00Z","modified":"2026-11-03T02:30:21Z","fixes":[{"ecosystem":"Debian:12","package":"inetutils","fixed_in":["2:2.2-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"inetutils","fixed_in":["2:2.2-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"inetutils","fixed_in":["2:2.2-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"inetutils","fixed_in":["2:1.9.2-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"inetutils","fixed_in":["2:1.9.4-1ubuntu0.1~esm2"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"inetutils","fixed_in":["2:1.9.4-3ubuntu0.1+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"inetutils","fixed_in":["2:1.9.4-11ubuntu0.1+esm1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.2-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.2-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.2-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-7+deb10u2"}]}],"versions":["2:1.9.4-7","2:1.9.4-7+deb10u1"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.2-1ubuntu0.1~esm1"}]}],"versions":["2:1.9.1.306-0a482-1","2:1.9.1.363-bbc1-1","2:1.9.2-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-1ubuntu0.1~esm2"}]}],"versions":["2:1.9.4-1","2:1.9.4-1build1","2:1.9.4-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-3ubuntu0.1+esm1"}]}],"versions":["2:1.9.4-2build1","2:1.9.4-3","2:1.9.4-3ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-11ubuntu0.1+esm1"}]}],"versions":["2:1.9.4-10build1","2:1.9.4-11","2:1.9.4-11ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.2-1ubuntu0.1~esm1"}]}],"versions":["2:1.9.1.306-0a482-1","2:1.9.1.363-bbc1-1","2:1.9.2-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-1ubuntu0.1~esm2"}]}],"versions":["2:1.9.4-1","2:1.9.4-1build1","2:1.9.4-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-3ubuntu0.1+esm1"}]}],"versions":["2:1.9.4-2build1","2:1.9.4-3","2:1.9.4-3ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"inetutils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.9.4-11ubuntu0.1+esm1"}]}],"versions":["2:1.9.4-10build1","2:1.9.4-11","2:1.9.4-11ubuntu0.1"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"gnu","product":"inetutils"}],"references":[{"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993476","tags":["x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=58cb043b190fd04effdaea7c9403416b436e50dd","tags":["x_transferred","Patch","Vendor Advisory","fix","report"]},{"url":"https://lists.gnu.org/archive/html/bug-inetutils/2021-06/msg00002.html","tags":["x_transferred","Mailing List","Vendor Advisory","advisory","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00033.html","tags":["mailing-list","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40491"},{"url":"https://github.com/advisories/GHSA-qw8r-vcwc-vjc9"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-40491","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-40491","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5177-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-40491","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-40491","description":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.","status":"published","published":"2021-09-03T00:00:00Z","modified":"2024-08-04T02:44:10.353Z","updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-27668","description":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.","status":"published","published":"2021-09-03T00:00:00Z","modified":"2024-08-04T02:44:10Z","updated_at":"2026-11-03T03:24:20.264881Z"}],"ghsa":[{"id":"GHSA-qw8r-vcwc-vjc9","title":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV...","description":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.","status":"published","published":"2022-05-24T19:13:00Z","modified":"2023-01-28T05:07:19Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:44:30.65038Z"}],"nvd":[{"id":"CVE-2021-40491","description":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.","status":"published","published":"2021-09-03T02:15:06.403Z","modified":"2026-06-17T04:07:02.04Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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-345"],"updated_at":"2026-11-02T14:06:58.05696Z"}],"osv":[{"id":"CVE-2021-40491","description":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.","status":"published","published":"2021-09-03T02:15:06.403Z","modified":"2026-11-04T02:30:44.623105676Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-07T03:07:46.576838Z"},{"id":"DEBIAN-CVE-2021-40491","description":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.","status":"published","published":"2021-09-03T02:15:06.403Z","modified":"2026-10-23T18:03:33.09357641Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:35.521549Z"},{"id":"UBUNTU-CVE-2021-40491","description":"The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.","status":"published","published":"2021-09-03T02:15:00Z","modified":"2026-02-04T03:01:08.95055Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:29.220315Z"},{"id":"DLA-3205-1","title":"inetutils - security update","status":"published","published":"2022-11-25T00:00:00Z","modified":"2026-03-09T01:21:56.171471Z","updated_at":"2026-11-02T15:46:11.734021Z"},{"id":"USN-5177-1","title":"inetutils vulnerability","description":"It was discovered that Inetutils did not properly check the response of\nftp requests. A remote attacker could use this vulnerability to cause a crash\nor run programs in the user machine.\n","status":"published","published":"2022-08-08T15:38:39Z","modified":"2026-06-29T13:49:35.161901895Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}