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cve[email protected]CVE-2011-1751
HistoryJun 21, 2012 - 3:55 p.m.

CVE-2011-1751

2012-06-2115:55:00
CWE-20
web.nvd.nist.gov
43
qemu-kvm
pciej_write
denial of service
arbitrary code
nvd
cve-2011-1751
piix4 power management

7.2 High

AI Score

Confidence

High

7.4 High

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:M/Au:S/C:C/I:C/A:C

0.001 Low

EPSS

Percentile

42.0%

The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to “active qemu timers.”

7.2 High

AI Score

Confidence

High

7.4 High

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:M/Au:S/C:C/I:C/A:C

0.001 Low

EPSS

Percentile

42.0%