{"id":"CVE-2019-20373","aliases":["DEBIAN-CVE-2019-20373","DLA-2064-1","DSA-4601-1","EUVD-2019-10925","GHSA-7fp6-mjg4-r496","UBUNTU-CVE-2019-20373"],"status":"published","title":"LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have...","description":"LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have an empty value if the user's shell lacks support for Bourne shell syntax. This is related to a run-x-session script.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00444,"percentile":0.38906,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2020-01-09T00:00:00Z","modified":"2026-06-17T02:30:18Z","fixes":[{"ecosystem":"Debian:8","package":"ldm","fixed_in":["2:2.2.15-2+deb8u1"],"sources":["osv"]},{"ecosystem":"Debian:9","package":"ldm","fixed_in":["2:2.2.18-2+deb9u1"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"ldm","fixed_in":["2:2.18.06-1+deb10u1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"ldm","fixed_in":["2:2.18.06-1+deb10u1build0.20.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:8","package":"ldm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.2.15-2+deb8u1"}]}],"versions":["2:2.2.15-2"]},{"source":"osv","ecosystem":"Debian:9","package":"ldm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.2.18-2+deb9u1"}]}],"versions":["2:2.2.18-2"]},{"source":"osv","ecosystem":"Debian:10","package":"ldm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.18.06-1+deb10u1"}]}],"versions":["2:2.18.06-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ldm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:2.2.17-1","2:2.2.18-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ldm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2:2.2.18-2","2:2.2.19-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"ldm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:2.18.06-1+deb10u1build0.20.04.1"}]}],"versions":["2:2.18.06-1"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"ltsp","product":"ldm"}],"references":[{"url":"https://git.launchpad.net/~ltsp-upstream/ltsp/+git/ldm/commit/?id=c351ac69ef63ed6c84221cef73e409059661b8ba","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","report"]},{"url":"https://www.debian.org/security/2020/dsa-4601","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2020/01/msg00007.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20373"},{"url":"https://github.com/advisories/GHSA-7fp6-mjg4-r496"},{"url":"https://ubuntu.com/security/CVE-2019-20373","tags":["report"]},{"url":"https://bugs.launchpad.net/ubuntu/+source/ldm/+bug/1839431","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4533-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20373","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-20373","description":"LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have an empty value if the user's shell lacks support for Bourne shell syntax. This is related to a run-x-session script.","status":"published","published":"2020-01-09T22:27:55Z","modified":"2024-08-05T02:39:09.776Z","updated_at":"2026-11-02T14:20:17.11067Z"}],"euvd":[{"id":"EUVD-2019-10925","description":"LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have an empty value if the user's shell lacks support for Bourne shell syntax. This is related to a run-x-session script.","status":"published","published":"2020-01-09T22:27:55Z","modified":"2024-08-05T02:39:09Z","updated_at":"2026-11-03T02:40:22.702411Z"}],"ghsa":[{"id":"GHSA-7fp6-mjg4-r496","title":"LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have...","description":"LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have an empty value if the user's shell lacks support for Bourne shell syntax. This is related to a run-x-session script.","status":"published","published":"2022-05-24T17:06:02Z","modified":"2023-01-29T05:01:05Z","updated_at":"2026-11-02T14:44:44.036588Z"}],"nvd":[{"id":"CVE-2019-20373","description":"LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have an empty value if the user's shell lacks support for Bourne shell syntax. This is related to a run-x-session script.","status":"published","published":"2020-01-09T23:15:10.29Z","modified":"2026-06-17T02:30:18.62Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:05:42.416368Z"}],"osv":[{"id":"UBUNTU-CVE-2019-20373","description":"LTSP LDM through 2.18.06 allows fat-client root access because the LDM_USERNAME variable may have an empty value if the user's shell lacks support for Bourne shell syntax. This is related to a run-x-session script.","status":"published","published":"2020-01-09T23:15:00Z","modified":"2026-02-04T04:31:51.608915Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:21.213407Z"},{"id":"DLA-2064-1","title":"ldm - security update","status":"published","published":"2020-01-10T00:00:00Z","modified":"2026-03-09T01:19:28.868961Z","updated_at":"2026-11-02T15:46:10.227108Z"},{"id":"DSA-4601-1","title":"ldm - security update","status":"published","published":"2020-01-09T00:00:00Z","modified":"2026-03-09T02:09:43.626777Z","updated_at":"2026-11-02T15:46:17.19998Z"}]}}