Security advisory

{
  "id": "9105c3e1ca814d39ad0b64401a8b4ccc756be4ea08feac23db3b58bf6afd7cbf",
  "url": "https://osv.dev/vulnerability/CVE-2023-28862",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-28862",
    "summary": "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.",
    "evidence": "osv:CVE-2023-28862",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2023-28862",
      "aliases": [
        "CVE-2023-28862"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8a6a69dd7d8f3f1917a6f7faa6a42fbc4fc78165"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.16.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  },
                  {
                    "cpe": "cpe:2.3:a:lemonldap-ng:lemonldap\\:\\:ng:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.16.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.0.2",
            "ubuntu/disco",
            "debian/buster",
            "v2.0.11",
            "ubuntu/hirsute",
            "debian/bullseye",
            "v2.0.15.1",
            "v2.0.15",
            "v2.0.14",
            "v2.0.13",
            "ubuntu/jammy",
            "v2.0.12",
            "v2.0.10",
            "v2.0.9",
            "v2.0.8",
            "ubuntu/groovy",
            "v2.0.7",
            "ubuntu/focal",
            "v2.0.6",
            "v2.0.4",
            "v2.0.3",
            "v2.0.1",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-28862.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.632869288Z",
      "provider": "osv",
      "references": [
        "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/releases/v2.16.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28862.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-28862",
        "https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/2896",
        "https://lists.debian.org/debian-lts-announce/2023/07/msg00018.html"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28862.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-28862",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509409,
  "published_at": "2023-03-31T00:00:00+00:00"
}