{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2025-53013","title":"Title"},{"category":"description","text":"Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. A vulnerability present in versions 0.9.10 through 0.9.16 allows a user to authenticate to a Linux host via Himmelblau using an *invalid* Linux Hello PIN, provided the host is offline. While the user gains access to the local system, Single Sign-On (SSO) fails due to the network being down and the inability to issue tokens (due to a failure to unlock the Hello key). The core issue lies in an incorrect assumption within the `acquire_token_by_hello_for_business_key` function: it was expected to return a `TPMFail` error for an invalid Hello key when offline, but instead, a preceding nonce request resulted in a `RequestFailed` error, leading the system to erroneously transition to an offline success state without validating the Hello key unlock. This impacts systems using Himmelblau for authentication when operating in an offline state with Hello PIN authentication enabled. Rocky Linux 8 (and variants) are not affected by this vulnerability. The problem is resolved in Himmelblau version 0.9.17. A workaround is available for users who cannot immediately upgrade. Disabling Hello PIN authentication by setting `enable_hello = false` in `/etc/himmelblau/himmelblau.conf` will mitigate the vulnerability.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2025-53013","url":"https://www.suse.com/security/cve/CVE-2025-53013"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1245437 for CVE-2025-53013","url":"https://bugzilla.suse.com/1245437"}],"title":"SUSE CVE CVE-2025-53013","tracking":{"current_release_date":"2026-03-12T08:58:12Z","generator":{"date":"2025-06-27T23:21:35Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2025-53013","initial_release_date":"2025-06-27T23:21:35Z","revision_history":[{"date":"2025-06-27T23:21:35Z","number":"2","summary":"Current version"},{"date":"2025-07-04T14:36:27Z","number":"3","summary":"Current version"},{"date":"2025-07-07T23:21:36Z","number":"4","summary":"Current version"},{"date":"2025-10-06T23:24:26Z","number":"5","summary":"Current version"},{"date":"2025-11-02T03:52:59Z","number":"6","summary":"Current version"},{"date":"2026-03-02T00:27:43Z","number":"7","summary":"unknown changes"},{"date":"2026-03-11T16:55:09Z","number":"8","summary":"updates entered QA"},{"date":"2026-03-12T08:58:12Z","number":"9","summary":"unknown changes"}],"status":"interim","version":"9"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE 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SP7"}]},"vulnerabilities":[{"cve":"CVE-2025-53013","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2025-53013"}],"notes":[{"category":"general","text":"Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. A vulnerability present in versions 0.9.10 through 0.9.16 allows a user to authenticate to a Linux host via Himmelblau using an *invalid* Linux Hello PIN, provided the host is offline. While the user gains access to the local system, Single Sign-On (SSO) fails due to the network being down and the inability to issue tokens (due to a failure to unlock the Hello key). The core issue lies in an incorrect assumption within the `acquire_token_by_hello_for_business_key` function: it was expected to return a `TPMFail` error for an invalid Hello key when offline, but instead, a preceding nonce request resulted in a `RequestFailed` error, leading the system to erroneously transition to an offline success state without validating the Hello key unlock. This impacts systems using Himmelblau for authentication when operating in an offline state with Hello PIN authentication enabled. Rocky Linux 8 (and variants) are not affected by this vulnerability. The problem is resolved in Himmelblau version 0.9.17. A workaround is available for users who cannot immediately upgrade. Disabling Hello PIN authentication by setting `enable_hello = false` in `/etc/himmelblau/himmelblau.conf` will mitigate the vulnerability.","title":"CVE description"}],"product_status":{"known_not_affected":["SUSE Linux Enterprise Desktop 15 SP7:himmelblau","SUSE Linux Enterprise Desktop 15 SP7:himmelblau-sshd-config","SUSE Linux Enterprise Desktop 15 SP7:libnss_himmelblau2","SUSE Linux Enterprise Desktop 15 SP7:pam-himmelblau","SUSE Linux Enterprise High Performance Computing 15 SP7:himmelblau","SUSE Linux Enterprise High Performance Computing 15 SP7:himmelblau-sshd-config","SUSE Linux Enterprise High Performance Computing 15 SP7:libnss_himmelblau2","SUSE Linux Enterprise High Performance Computing 15 SP7:pam-himmelblau","SUSE Linux Enterprise Module for Basesystem 15 SP7:himmelblau","SUSE Linux Enterprise Module for Basesystem 15 SP7:himmelblau-sshd-config","SUSE Linux Enterprise Module for Basesystem 15 SP7:libnss_himmelblau2","SUSE Linux Enterprise Module for Basesystem 15 SP7:pam-himmelblau","SUSE Linux Enterprise Server 15 SP7:himmelblau","SUSE Linux Enterprise Server 15 SP7:himmelblau-sshd-config","SUSE Linux Enterprise Server 15 SP7:libnss_himmelblau2","SUSE Linux Enterprise Server 15 SP7:pam-himmelblau","SUSE Linux Enterprise Server for SAP Applications 15 SP7:himmelblau","SUSE Linux Enterprise Server for SAP Applications 15 SP7:himmelblau-sshd-config","SUSE Linux Enterprise Server for SAP Applications 15 SP7:libnss_himmelblau2","SUSE Linux Enterprise Server for SAP Applications 15 SP7:pam-himmelblau"],"recommended":["SUSE Linux Enterprise Server 16.0:himmelblau-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-qr-greeter-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-sshd-config-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-sso-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:libnss_himmelblau2-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:pam-himmelblau-0.9.22+git.0.d41f700-160000.1.2","openSUSE Tumbleweed:himmelblau-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-qr-greeter-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-sshd-config-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-sso-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:libnss_himmelblau2-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:pam-himmelblau-0.9.17+git.0.4a97692-1.1"]},"references":[{"category":"external","summary":"CVE-2025-53013","url":"https://www.suse.com/security/cve/CVE-2025-53013"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1245437 for CVE-2025-53013","url":"https://bugzilla.suse.com/1245437"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Enterprise Server 16.0:himmelblau-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-qr-greeter-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-sshd-config-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-sso-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:libnss_himmelblau2-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:pam-himmelblau-0.9.22+git.0.d41f700-160000.1.2","openSUSE Tumbleweed:himmelblau-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-qr-greeter-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-sshd-config-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-sso-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:libnss_himmelblau2-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:pam-himmelblau-0.9.17+git.0.4a97692-1.1"]}],"scores":[{"cvss_v3":{"baseScore":5.2,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"products":["SUSE Linux Enterprise Server 16.0:himmelblau-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-qr-greeter-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-sshd-config-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:himmelblau-sso-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:libnss_himmelblau2-0.9.22+git.0.d41f700-160000.1.2","SUSE Linux Enterprise Server 16.0:pam-himmelblau-0.9.22+git.0.d41f700-160000.1.2","openSUSE Tumbleweed:himmelblau-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-qr-greeter-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-sshd-config-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:himmelblau-sso-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:libnss_himmelblau2-0.9.17+git.0.4a97692-1.1","openSUSE Tumbleweed:pam-himmelblau-0.9.17+git.0.4a97692-1.1"]}],"threats":[{"category":"impact","date":"2025-06-26T20:01:37Z","details":"moderate"}],"title":"CVE-2025-53013"}]}