{"id":"CVE-2025-59044","aliases":["EUVD-2025-27515","SUSE-SU-2025:21158-1","openSUSE-SU-2025-20114-1","openSUSE-SU-2025:20114-1"],"status":"published","title":"Himmelblau vulnerable to GID collision via group name-derived mapping (privilege escalation)","description":"Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Himmelblau 0.9.x derives numeric GIDs for Entra ID groups from the group display name when himmelblau.conf `id_attr_map = name` (the default configuration). Because Microsoft Entra ID allows multiple groups with the same `displayName` (including end-user–created personal/O365 groups, depending on tenant policy), distinct directory groups can collapse to the same numeric GID on Linux. This issue only applies to Himmelblau versions 0.9.0 through 0.9.22. Any resource or service on a Himmelblau-joined host that enforces authorization by numeric GID (files/dirs, etc.) can be unintentionally accessible to a user who creates or joins a different Entra/O365 group that happens to share the same `displayName` as a privileged security group. Users should upgrade to 0.9.23, or 1.0.0 or later, to receive a patch. Group to GID mapping now uses Entra ID object IDs (GUIDs) and does not collide on same-name groups. As a workaround, use tenant policy hardening to restrict arbitrary group creation until all hosts are patched.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00151,"percentile":0.04339,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1188"],"published":"2025-09-09T22:31:39Z","modified":"2026-10-28T02:31:01Z","affected":[{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 16.0","package":"himmelblau","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.23+git.0.9776141-160000.1.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","package":"himmelblau","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.23+git.0.9776141-160000.1.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Leap 16.0","package":"himmelblau","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.23+git.0.9776141-160000.1.1"}]}],"bundled":2}],"products":[{"vendor":"himmelblau-idm","product":"himmelblau"}],"references":[{"url":"https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-2m43-mmg9-3rgc","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/himmelblau-idm/himmelblau/security/advisories/GHSA-gcxr-m95v-qcf7","tags":["x_refsource_MISC","advisory"]},{"url":"https://github.com/himmelblau-idm/himmelblau/commit/76c5b41df7f89378af65dc7c0d0484d7d41b3281","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59044.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59044","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202521158-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1249013","tags":["report"]},{"url":"https://bugzilla.suse.com/1250687","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2025-58160","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-59044","tags":["web"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-59044","title":"Himmelblau vulnerable to GID collision via group name-derived mapping (privilege escalation)","description":"Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Himmelblau 0.9.x derives numeric GIDs for Entra ID groups from the group display name when himmelblau.conf `id_attr_map = name` (the default configuration). Because Microsoft Entra ID allows multiple groups with the same `displayName` (including end-user–created personal/O365 groups, depending on tenant policy), distinct directory groups can collapse to the same numeric GID on Linux. This issue only applies to Himmelblau versions 0.9.0 through 0.9.22. Any resource or service on a Himmelblau-joined host that enforces authorization by numeric GID (files/dirs, etc.) can be unintentionally accessible to a user who creates or joins a different Entra/O365 group that happens to share the same `displayName` as a privileged security group. Users should upgrade to 0.9.23, or 1.0.0 or later, to receive a patch. Group to GID mapping now uses Entra ID object IDs (GUIDs) and does not collide on same-name groups. As a workaround, use tenant policy hardening to restrict arbitrary group creation until all hosts are patched.","status":"published","published":"2025-09-09T22:31:39.48Z","modified":"2025-09-10T16:06:02.089Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T14:32:47.812946Z"}],"euvd":[{"id":"EUVD-2025-27515","description":"Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Himmelblau 0.9.x derives numeric GIDs for Entra ID groups from the group display name when himmelblau.conf `id_attr_map = name` (the default configuration). Because Microsoft Entra ID allows multiple groups with the same `displayName` (including end-user–created personal/O365 groups, depending on tenant policy), distinct directory groups can collapse to the same numeric GID on Linux. This issue only applies to Himmelblau versions 0.9.0 through 0.9.22. Any resource or service on a Himmelblau-joined host that enforces authorization by numeric GID (files/dirs, etc.) can be unintentionally accessible to a user who creates or joins a different Entra/O365 group that happens to share the same `displayName` as a privileged security group. Users should upgrade to 0.9.23, or 1.0.0 or later, to receive a patch. Group to GID mapping now uses Entra ID object IDs (GUIDs) and does not collide on same-name groups. As a workaround, use tenant policy hardening to restrict arbitrary group creation until all hosts are patched.","status":"published","published":"2025-09-09T22:31:39Z","modified":"2025-09-10T16:06:02Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T20:31:45.093776Z"}],"nvd":[{"id":"CVE-2025-59044","description":"Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Himmelblau 0.9.x derives numeric GIDs for Entra ID groups from the group display name when himmelblau.conf `id_attr_map = name` (the default configuration). Because Microsoft Entra ID allows multiple groups with the same `displayName` (including end-user–created personal/O365 groups, depending on tenant policy), distinct directory groups can collapse to the same numeric GID on Linux. This issue only applies to Himmelblau versions 0.9.0 through 0.9.22. Any resource or service on a Himmelblau-joined host that enforces authorization by numeric GID (files/dirs, etc.) can be unintentionally accessible to a user who creates or joins a different Entra/O365 group that happens to share the same `displayName` as a privileged security group. Users should upgrade to 0.9.23, or 1.0.0 or later, to receive a patch. Group to GID mapping now uses Entra ID object IDs (GUIDs) and does not collide on same-name groups. As a workaround, use tenant policy hardening to restrict arbitrary group creation until all hosts are patched.","status":"published","published":"2025-09-09T23:15:37.583Z","modified":"2026-10-19T17:10:00.173Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T14:11:28.834562Z"}],"osv":[{"id":"CVE-2025-59044","title":"Himmelblau vulnerable to GID collision via group name-derived mapping (privilege escalation)","description":"Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. Himmelblau 0.9.x derives numeric GIDs for Entra ID groups from the group display name when himmelblau.conf `id_attr_map = name` (the default configuration). Because Microsoft Entra ID allows multiple groups with the same `displayName` (including end-user–created personal/O365 groups, depending on tenant policy), distinct directory groups can collapse to the same numeric GID on Linux. This issue only applies to Himmelblau versions 0.9.0 through 0.9.22. Any resource or service on a Himmelblau-joined host that enforces authorization by numeric GID (files/dirs, etc.) can be unintentionally accessible to a user who creates or joins a different Entra/O365 group that happens to share the same `displayName` as a privileged security group. Users should upgrade to 0.9.23, or 1.0.0 or later, to receive a patch. Group to GID mapping now uses Entra ID object IDs (GUIDs) and does not collide on same-name groups. As a workaround, use tenant policy hardening to restrict arbitrary group creation until all hosts are patched.","status":"published","published":"2025-09-09T22:31:39.48Z","modified":"2026-10-28T02:31:01.228179059Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T15:44:51.190588Z"},{"id":"openSUSE-SU-2025-20114-1","title":"Security update for himmelblau","description":"This update for himmelblau fixes the following issues:\n\n- Update to version 0.9.23+git.0.9776141:\n  * CVE-2025-59044: Fixed GID collision of same-name groups allowing privilege escalation (bsc#1250687)\n  * deps(rust): bump the all-cargo-updates group\n  * CVE-2025-58160: tracing-subscriber: Fixed log pollution (bsc#1249013)\n","status":"withdrawn","published":"2025-11-27T20:16:29Z","modified":"2026-02-17T14:06:49.795776Z","updated_at":"2026-11-02T16:58:36.976155Z"},{"id":"openSUSE-SU-2025:20114-1","title":"Security update for himmelblau","description":"This update for himmelblau fixes the following issues:\n\n- Update to version 0.9.23+git.0.9776141:\n  * CVE-2025-59044: Fixed GID collision of same-name groups allowing privilege escalation (bsc#1250687)\n  * deps(rust): bump the all-cargo-updates group\n  * CVE-2025-58160: tracing-subscriber: Fixed log pollution (bsc#1249013)\n","status":"published","published":"2025-11-27T20:16:29Z","modified":"2026-03-23T04:54:17.150456Z","updated_at":"2026-11-02T16:58:38.101535Z"},{"id":"SUSE-SU-2025:21158-1","title":"Security update for himmelblau","description":"This update for himmelblau fixes the following issues:\n\n- Update to version 0.9.23+git.0.9776141:\n  * CVE-2025-59044: Fixed GID collision of same-name groups allowing privilege escalation (bsc#1250687)\n  * deps(rust): bump the all-cargo-updates group\n  * CVE-2025-58160: tracing-subscriber: Fixed log pollution (bsc#1249013)\n","status":"published","published":"2025-11-27T20:17:50Z","modified":"2026-03-23T04:51:14.10172Z","updated_at":"2026-11-02T15:54:00.344164Z"}]}}