CVE-2026-45108
HighCVSS 8.4Summary
Himmelblau to zestaw interoperacyjny dla Microsoft Azure Entra ID i Intune. W wersjach od 2.0.0 do przed 3.1.5 oraz 2.3.11 występowała podatność na obejście uwierzytelniania w przepływie Device Authorization Grant (DAG), która pozwalała użytkownikowi w tej samej domenie Entra ID uzyskać lokalną sesję Unix jako inny użytkownik, używając własnych ważnych poświadczeń.
Risk Assessment
Podatność ta może prowadzić do nieautoryzowanego dostępu do kont użytkowników w systemie, co stwarza poważne zagrożenie dla bezpieczeństwa danych organizacji.
Recommendation
Zaleca się aktualizację Himmelblau do wersji 3.1.5 lub 2.3.11, aby usunąć tę podatność i zabezpieczyć system przed potencjalnymi atakami.
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Original NVD description (English source)
Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From 2.0.0 to before 3.1.5 and 2.3.11, Himmelblau contained an authentication bypass vulnerability in the Device Authorization Grant (DAG) flow that allowed a user within the same Entra ID domain to obtain a local Unix session as another user by providing their own valid credentials. The vulnerability existed in the token_validate function, which validated domain aliases for legitimate multi-domain scenarios but failed to verify that the local part (username) of the authenticated user's UPN matched the requested account username. The function only compared domains, not the complete usernames. This vulnerability is fixed in 3.1.5 and 2.3.11.