PT-2010-2097 · Linux+1 · Kvm+1
Gleb Napatov
+1
·
Publicado
2010-02-09
·
Atualizado
2024-06-27
·
CVE-2010-0306
CVSS v2.0
4.1
Média
| Vetor | AV:L/AC:M/Au:S/C:P/I:P/A:P |
Name of the Vulnerable Software and Affected Versions
KVM version 83
Description
The issue is related to the x86 emulator in KVM when a guest is configured for Symmetric Multiprocessing (SMP). It does not properly restrict instruction execution based on the Current Privilege Level (CPL) and I/O Privilege Level (IOPL). This allows guest OS users to potentially cause a denial of service (guest OS crash) or gain privileges on the guest OS. The exploitation can occur by accessing an IO port or MMIO region and replacing an instruction between emulator entry and instruction fetch.
Recommendations
For KVM version 83, consider restricting access to IO ports and MMIO regions to minimize the risk of exploitation. As a temporary workaround, limiting the privileges of guest OS users may help reduce the impact of this issue. At the moment, there is no information about a newer version that contains a fix for this vulnerability.
DoS
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Enumeração de Fraquezas
Identificadores relacionados
Produtos afetados
Kvm
Red Hat