CVE-2014-1666
HighSummary
Funkcja do_physdev_op w Xen w wersjach 4.1.5, 4.1.6.1, 4.2.2 do 4.2.3 oraz 4.3.x nie ogranicza prawidłowo dostępu do operacji PHYSDEVOP_prepare_msix i PHYSDEVOP_release_msix. To pozwala lokalnym gościom PV na wywołanie odmowy usługi (awaria hosta lub gościa) lub potencjalne uzyskanie uprawnień przez nieokreślone wektory.
Risk Assessment
Organizacja może doświadczyć awarii systemu, co prowadzi do przerwy w dostępności usług. Istnieje również ryzyko uzyskania nieautoryzowanych uprawnień przez lokalnych użytkowników.
Recommendation
Zaleca się aktualizację do najnowszej wersji Xen, która zawiera poprawki dla tej podatności. Należy również monitorować dostęp do operacji PHYSDEVOP w celu zminimalizowania ryzyka.
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Original NVD description (English source)
The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

