{"id":"UBUNTU-CVE-2021-28374","details":"The Debian courier-authlib package before 0.71.1-2 for Courier Authentication Library creates a /run/courier/authdaemon directory with weak permissions, allowing an attacker to read user information. This may include a cleartext password in some configurations. In general, it includes the user's existence, uid and gids, home and/or Maildir directory, quota, and some type of password information (such as a hash).","modified":"2026-04-22T12:50:16.171352Z","published":"2021-03-15T05:15:00Z","upstream":["CVE-2021-28374"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-28374"},{"type":"REPORT","url":"https://bugs.debian.org/984810"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-28374"}],"affected":[{"package":{"name":"courier-authlib","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/courier-authlib@0.66.4-3build1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.66.1-1","0.66.4-2","0.66.4-3","0.66.4-3build1"],"ecosystem_specific":{"binaries":[{"binary_name":"courier-authdaemon","binary_version":"0.66.4-3build1"},{"binary_name":"courier-authlib","binary_version":"0.66.4-3build1"},{"binary_name":"courier-authlib-ldap","binary_version":"0.66.4-3build1"},{"binary_name":"courier-authlib-mysql","binary_version":"0.66.4-3build1"},{"binary_name":"courier-authlib-pipe","binary_version":"0.66.4-3build1"},{"binary_name":"courier-authlib-postgresql","binary_version":"0.66.4-3build1"},{"binary_name":"courier-authlib-sqlite","binary_version":"0.66.4-3build1"},{"binary_name":"courier-authlib-userdb","binary_version":"0.66.4-3build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28374.json"}},{"package":{"name":"courier-authlib","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/courier-authlib@0.68.0-4ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.68.0-3ubuntu1","0.68.0-4","0.68.0-4build1","0.68.0-4ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"courier-authdaemon","binary_version":"0.68.0-4ubuntu0.1"},{"binary_name":"courier-authlib","binary_version":"0.68.0-4ubuntu0.1"},{"binary_name":"courier-authlib-ldap","binary_version":"0.68.0-4ubuntu0.1"},{"binary_version":"0.68.0-4ubuntu0.1","binary_name":"courier-authlib-mysql"},{"binary_name":"courier-authlib-pipe","binary_version":"0.68.0-4ubuntu0.1"},{"binary_name":"courier-authlib-postgresql","binary_version":"0.68.0-4ubuntu0.1"},{"binary_name":"courier-authlib-sqlite","binary_version":"0.68.0-4ubuntu0.1"},{"binary_name":"courier-authlib-userdb","binary_version":"0.68.0-4ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28374.json"}},{"package":{"name":"courier-authlib","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/courier-authlib@0.69.0-2build3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.69.0-2build2","0.69.0-2build3"],"ecosystem_specific":{"binaries":[{"binary_version":"0.69.0-2build3","binary_name":"courier-authdaemon"},{"binary_name":"courier-authlib","binary_version":"0.69.0-2build3"},{"binary_name":"courier-authlib-ldap","binary_version":"0.69.0-2build3"},{"binary_name":"courier-authlib-mysql","binary_version":"0.69.0-2build3"},{"binary_name":"courier-authlib-pipe","binary_version":"0.69.0-2build3"},{"binary_version":"0.69.0-2build3","binary_name":"courier-authlib-postgresql"},{"binary_name":"courier-authlib-sqlite","binary_version":"0.69.0-2build3"},{"binary_name":"courier-authlib-userdb","binary_version":"0.69.0-2build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28374.json"}},{"package":{"name":"courier-authlib","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/courier-authlib@0.71.1-2build1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.71.1-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"courier-authdaemon","binary_version":"0.71.1-2build1"},{"binary_name":"courier-authlib","binary_version":"0.71.1-2build1"},{"binary_name":"courier-authlib-ldap","binary_version":"0.71.1-2build1"},{"binary_version":"0.71.1-2build1","binary_name":"courier-authlib-mysql"},{"binary_name":"courier-authlib-pipe","binary_version":"0.71.1-2build1"},{"binary_version":"0.71.1-2build1","binary_name":"courier-authlib-postgresql"},{"binary_name":"courier-authlib-sqlite","binary_version":"0.71.1-2build1"},{"binary_name":"courier-authlib-userdb","binary_version":"0.71.1-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-28374.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}