{"id":"CVE-2020-8021","aliases":["DEBIAN-CVE-2020-8021","DLA-2545-1","EUVD-2020-28934","GHSA-4635-6x6c-c5r7","UBUNTU-CVE-2020-8021"],"status":"published","title":"unauthorized read access to files where sourceaccess is disabled via a crafted _service file in Open Build Service","description":"a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01299,"percentile":0.70667,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-269"],"published":"2020-05-19T14:25:18Z","modified":"2026-11-06T13:49:14Z","fixes":[{"ecosystem":"Debian:12","package":"open-build-service","fixed_in":["2.9.4-4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"open-build-service","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.4-4"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"open-build-service","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.1-10+deb9u1"}]}],"versions":["2.7.1-10"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"obs-build","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20141024-1","20141024-1.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"obs-build","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20170201-3"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"obs-build","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20180831-3","20180831-3ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"obs-build","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20190710-1","20210120-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"obs-build","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20210120-4"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"obs-build","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20210120-4build1"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"opensuse","product":"open build service"},{"vendor":"opensuse","product":"open_build_service"},{"vendor":"suse","product":"open build service"}],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1171649","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Patch","Vendor Advisory","fix","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/02/msg00006.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8021"},{"url":"https://github.com/advisories/GHSA-4635-6x6c-c5r7"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-8021","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-8021","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-8021","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-8021","title":"unauthorized read access to files where sourceaccess is disabled via a crafted _service file in Open Build Service","description":"a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.","status":"published","published":"2020-05-19T14:25:18.71Z","modified":"2024-09-16T16:22:43.78Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:35:50.88562Z"}],"euvd":[{"id":"EUVD-2020-28934","description":"a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.","status":"published","published":"2020-05-19T14:25:18Z","modified":"2024-09-16T16:22:43Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:55:52.590586Z"}],"ghsa":[{"id":"GHSA-4635-6x6c-c5r7","title":"a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read...","description":"a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.","status":"published","published":"2022-05-24T17:18:09Z","modified":"2023-01-29T05:02:42Z","cwes":["CWE-269"],"updated_at":"2026-11-02T14:45:09.006349Z"}],"nvd":[{"id":"CVE-2020-8021","description":"a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is 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disabled This issue affects: Open Build Service versions prior to 2.10.5.","status":"published","published":"2020-05-19T15:15:00Z","modified":"2026-11-06T13:49:14.482185866Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-06T14:21:56.888881Z"},{"id":"DLA-2545-1","title":"open-build-service - security update","status":"published","published":"2021-02-03T00:00:00Z","modified":"2026-03-09T01:17:51.535383Z","updated_at":"2026-11-02T15:46:10.712745Z"}]}}