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Himmelblau leaks credentials in the debug log

Type: advisorySources: OSV

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Starting in version 0.7.0 and prior to versions 0.7.15 and 0.8.3, Himmelblau is vulnerable to leaking credentials in debug logs. When debug logging is enabled, user access tokens are inadvertently logged, potentially exposing sensitive authentication data. Similarly, Kerberos Ticket-Granting Tickets (TGTs) are logged when debug logging is enabled. Both issues pose a risk of exposing sensitive credentials, particularly in environments where debug logging is enabled. Himmelblau versions 0.7.15 and 0.8.3 contain a patch that fixes both issues. Some workarounds are available for users who are unable to upgrade. For the **logon compliance script issue**, disable the `logon_script` option in `/etc/himmelblau/himmelblau.conf`, and avoid using the `-d` flag when starting the `himmelblaud` daemon. For the Kerberos CCache issue, one may disable debug logging globally by setting the `debug` option in `/etc/himmelblau/himmelblau.conf` to `false` and avoiding the `-d` parameter when starting `himmelblaud`.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-24034
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 03:13 UTC · Revision 1

Source evidence

Himmelblau leaks credentials in the debug log

core-osv · Original source

Published 23 Jan 2025, 17:38 UTC

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Starting in version 0.7.0 and prior to versions 0.7.15 and 0.8.3, Himmelblau is vulnerable to leaking credentials in debug logs. When debug logging is enabled, user access tokens are inadvertently logged, potentially exposing sensitive authentication data. Similarly, Kerberos Ticket-Granting Tickets (TGTs) are logged when debug logging is enabled. Both issues pose a risk of exposing sensitive credentials, particularly in environments where debug logging is enabled. Himmelblau versions 0.7.15 and 0.8.3 contain a patch that fixes both issues. Some workarounds are available for users who are unable to upgrade. For the **logon compliance script issue**, disable the `logon_script` option in `/etc/himmelblau/himmelblau.conf`, and avoid using the `-d` flag when starting the `himmelblaud` daemon. For the Kerberos CCache issue, one may disable debug logging globally by setting the `debug` option in `/etc/himmelblau/himmelblau.conf` to `false` and avoiding the `-d` parameter when starting `himmelblaud`.

osv:CVE-2025-24034
Complete source record
{
  "id": "c8be0f319ff48d07a72b93136865e06d4f9bfed9364777f15391ca61f34e1653",
  "url": "https://osv.dev/vulnerability/CVE-2025-24034",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Himmelblau leaks credentials in the debug log",
    "summary": "Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Starting in version 0.7.0 and prior to versions 0.7.15 and 0.8.3, Himmelblau is vulnerable to leaking credentials in debug logs. When debug logging is enabled, user access tokens are inadvertently logged, potentially exposing sensitive authentication data. Similarly, Kerberos Ticket-Granting Tickets (TGTs) are logged when debug logging is enabled. Both issues pose a risk of exposing sensitive credentials, particularly in environments where debug logging is enabled. Himmelblau versions 0.7.15 and 0.8.3 contain a patch that fixes both issues. Some workarounds are available for users who are unable to upgrade. For the **logon compliance script issue**, disable the `logon_script` option in `/etc/himmelblau/himmelblau.conf`, and avoid using the `-d` flag when starting the `himmelblaud` daemon. For the Kerberos CCache issue, one may disable debug logging globally by setting the `debug` option in `/etc/himmelblau/himmelblau.conf` to `false` and avoiding the `-d` parameter when starting `himmelblaud`.",
    "evidence": "osv:CVE-2025-24034",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-24034",
      "aliases": [
        "CVE-2025-24034",
        "GHSA-p989-2f5w-9cf6"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/himmelblau-idm/himmelblau",
              "type": "GIT",
              "events": [
                {
                  "introduced": "64f51bf5e96b74de1c7b8a023996bfe751029af2"
                },
                {
                  "fixed": "7a70a0b6bb1db45f485ff0e0058b58671b6b83c6"
                },
                {
                  "introduced": "249ba5f5dcd7c9443d9a7448e0130e03ec5907ae"
                },
                {
                  "fixed": "a5e14f88e322d114089df19364089dcec10ebd18"
                },
                {
                  "fixed": "1216804f15ce5dc74bb5da48b5508c41d2ece8fa"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.7.0"
                      },
                      {
                        "fixed": "0.7.15"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0.8.0"
                      },
                      {
                        "fixed": "0.8.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1216804f15ce5dc74bb5da48b5508c41d2ece8fa"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7a70a0b6bb1db45f485ff0e0058b58671b6b83c6"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "0.7.15"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a5e14f88e322d114089df19364089dcec10ebd18"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "0.8.3"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.7.14",
            "0.8.2",
            "0.8.1",
            "0.8.0",
            "0.7.13",
            "0.7.12",
            "0.7.11",
            "0.7.10",
            "0.7.9",
            "0.7.8",
            "0.7.7",
            "0.7.6",
            "0.7.5",
            "0.7.4",
            "0.7.3",
            "0.7.2",
            "0.7.1",
            "0.7.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-24034.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.017673672Z",
      "provider": "osv",
      "references": [
        "https://github.com/himmelblau-idm/himmelblau/releases/tag/0.7.15",
        "https://github.com/himmelblau-idm/himmelblau/releases/tag/0.8.3",
        "https://manpages.opensuse.org/Tumbleweed/himmelblau/himmelblau.conf.5.en.html",
        "https://manpages.opensuse.org/Tumbleweed/himmelblau/himmelblaud.8.en.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24034.json",
        "https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-p989-2f5w-9cf6",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-24034",
        "https://github.com/himmelblau-idm/himmelblau/commit/1216804f15ce5dc74bb5da48b5508c41d2ece8fa"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-532"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24034.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-24034",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 499953,
  "published_at": "2025-01-23T17:38:57.957+00:00"
}