{"id":"CVE-2023-28862","aliases":["DEBIAN-CVE-2023-28862","DLA-3496-1","EUVD-2023-32483","GHSA-r74q-xwhp-q6r9","UBUNTU-CVE-2023-28862"],"status":"published","title":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the...","description":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00957,"percentile":0.61694,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2023-03-31T00:00:00Z","modified":"2026-10-28T02:30:41Z","fixes":[{"ecosystem":"Debian:12","package":"lemonldap-ng","fixed_in":["2.16.1+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"lemonldap-ng","fixed_in":["2.16.1+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"lemonldap-ng","fixed_in":["2.16.1+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"lemonldap-ng","fixed_in":["2.0.2+ds-7+deb10u9"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.1+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.1+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.16.1+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2+ds-7+deb10u9"}]}],"versions":["2.0.2+ds-7+deb10u1","2.0.2+ds-7+deb10u2","2.0.2+ds-7+deb10u3","2.0.2+ds-7+deb10u4","2.0.2+ds-7+deb10u5","2.0.2+ds-7+deb10u6","2.0.2+ds-7+deb10u7","2.0.2+ds-7+deb10u8"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3-1","1.4.6-1","1.4.6-2","1.4.6-3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"lemonldap-ng","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"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.5+ds-2","2.0.6+ds-2","2.0.7+ds-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.11+ds-4","2.0.13+ds-3","2.0.13+ds-3ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"lemonldap-ng","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.16.2+ds-1","2.17.1+ds-1","2.17.2+ds-1","2.17.2+ds-2","2.18.1+ds-1","2.18.2+ds-1"]}],"products":[{"vendor":"lemonldap-ng","product":"lemonldap\\"}],"references":[{"url":"https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2896","tags":["x_transferred","Exploit","Issue Tracking","Patch","report"]},{"url":"https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/releases/v2.16.1","tags":["x_transferred","Release Notes","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/07/msg00018.html","tags":["mailing-list","x_transferred","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28862","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-r74q-xwhp-q6r9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28862.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-28862","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-28862","tags":["report"]},{"url":"https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/commit/aadbb02471bf2a5effd7590708edb8a180f27948","tags":["report"]},{"url":"https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/merge_requests/334","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-28862","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-28862","description":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.","status":"published","published":"2023-03-31T00:00:00Z","modified":"2025-02-14T19:33:52.706Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:35:32.376766Z"}],"euvd":[{"id":"EUVD-2023-32483","description":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.","status":"published","published":"2023-03-31T00:00:00Z","modified":"2025-02-14T19:33:52Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T20:53:29.822486Z"}],"ghsa":[{"id":"GHSA-r74q-xwhp-q6r9","title":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the...","description":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.","status":"published","published":"2023-03-31T18:30:21Z","modified":"2023-07-14T15:30:23Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:54:42.596364Z"}],"nvd":[{"id":"CVE-2023-28862","description":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.","status":"published","published":"2023-03-31T17:15:06.62Z","modified":"2026-06-17T05:48:56.127Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:07:51.883939Z"}],"osv":[{"id":"CVE-2023-28862","description":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.","status":"published","published":"2023-03-31T00:00:00Z","modified":"2026-10-28T02:30:41.632869288Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:31.468318Z"},{"id":"DEBIAN-CVE-2023-28862","description":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.","status":"published","published":"2023-03-31T17:15:06.62Z","modified":"2026-10-26T18:01:03.651307054Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:39.679062Z"},{"id":"UBUNTU-CVE-2023-28862","description":"An issue was discovered in LemonLDAP::NG before 2.16.1. Weak session ID generation in the AuthBasic handler and incorrect failure handling during a password check allow attackers to bypass 2FA verification. Any plugin that tries to deny session creation after the store step does not deny an AuthBasic session.","status":"published","published":"2023-03-31T17:15:00Z","modified":"2025-10-24T05:01:54Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:54:20.997471Z"},{"id":"DLA-3496-1","title":"lemonldap-ng - security update","status":"published","published":"2023-07-14T00:00:00Z","modified":"2026-03-09T01:20:45.692277Z","updated_at":"2026-11-02T15:46:11.734021Z"}]}}