{"id":"UBUNTU-CVE-2021-35473","details":"An issue was discovered in LemonLDAP::NG before 2.0.12. There is a missing expiration check in the OAuth2.0 handler, i.e., it does not verify access token validity. An attacker can use a expired access token from an OIDC client to access the OAuth2 handler The earliest affected version is 2.0.4.","modified":"2025-10-24T04:50:25Z","published":"2024-11-10T23:15:00Z","upstream":["CVE-2021-35473"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-35473"},{"type":"REPORT","url":"https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2549"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-35473"}],"affected":[{"package":{"name":"lemonldap-ng","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/lemonldap-ng@1.4.6-3?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3-1","1.4.6-1","1.4.6-2","1.4.6-3"],"ecosystem_specific":{"priority_reason":"Upstream rates this as being low severity","binaries":[{"binary_name":"lemonldap-ng","binary_version":"1.4.6-3"},{"binary_name":"liblemonldap-ng-common-perl","binary_version":"1.4.6-3"},{"binary_name":"liblemonldap-ng-conf-perl","binary_version":"1.4.6-3"},{"binary_name":"liblemonldap-ng-handler-perl","binary_version":"1.4.6-3"},{"binary_name":"liblemonldap-ng-manager-perl","binary_version":"1.4.6-3"},{"binary_name":"liblemonldap-ng-portal-perl","binary_version":"1.4.6-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-35473.json"}},{"package":{"name":"lemonldap-ng","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/lemonldap-ng@1.9.16-2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9.10-1","1.9.13-2","1.9.14-1","1.9.15-1","1.9.16-2"],"ecosystem_specific":{"priority_reason":"Upstream rates this as being low severity","binaries":[{"binary_name":"lemonldap-ng","binary_version":"1.9.16-2"},{"binary_name":"lemonldap-ng-fastcgi-server","binary_version":"1.9.16-2"},{"binary_name":"lemonldap-ng-handler","binary_version":"1.9.16-2"},{"binary_name":"liblemonldap-ng-common-perl","binary_version":"1.9.16-2"},{"binary_version":"1.9.16-2","binary_name":"liblemonldap-ng-handler-perl"},{"binary_name":"liblemonldap-ng-manager-perl","binary_version":"1.9.16-2"},{"binary_name":"liblemonldap-ng-portal-perl","binary_version":"1.9.16-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-35473.json"}},{"package":{"name":"lemonldap-ng","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/lemonldap-ng@2.0.7+ds-2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.5+ds-2","2.0.6+ds-2","2.0.7+ds-2"],"ecosystem_specific":{"binaries":[{"binary_name":"lemonldap-ng","binary_version":"2.0.7+ds-2"},{"binary_name":"lemonldap-ng-fastcgi-server","binary_version":"2.0.7+ds-2"},{"binary_name":"lemonldap-ng-handler","binary_version":"2.0.7+ds-2"},{"binary_name":"lemonldap-ng-uwsgi-app","binary_version":"2.0.7+ds-2"},{"binary_name":"liblemonldap-ng-common-perl","binary_version":"2.0.7+ds-2"},{"binary_name":"liblemonldap-ng-handler-perl","binary_version":"2.0.7+ds-2"},{"binary_version":"2.0.7+ds-2","binary_name":"liblemonldap-ng-manager-perl"},{"binary_name":"liblemonldap-ng-portal-perl","binary_version":"2.0.7+ds-2"}],"priority_reason":"Upstream rates this as being low severity"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-35473.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"low"}]}