Информационная безопасность
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Многочисленные уязвимости безопасности в kvm
Опубликовано:11 марта 2010 г.
Источник:
SecurityVulns ID:10680
Тип:локальная
Уровень опасности:
5/10
Описание:DoS, повышение привилегий.
Затронутые продукты:KVM : kvm 72
CVE:CVE-2010-0419 (The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch.)
 CVE-2010-0309 (The pit_ioport_read function in the Programmable Interval Timer (PIT) emulation in i8254.c in KVM 83 does not properly use the pit_state data structure, which allows guest OS users to cause a denial of service (host OS crash or hang) by attempting to read the /dev/port file.)
 CVE-2010-0306 (The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298.)
 CVE-2010-0298 (The x86 emulator in KVM 83 does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) in determining the memory access available to CPL3 code, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, a related issue to CVE-2010-0306.)
Оригинальный текстdocumentDEBIAN, [SECURITY] [DSA-2010-1] New kvm packages fix several vulnerabilities (11.03.2010)

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