CVE-2011-1751 Detail

Current Description

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."


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
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References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://blog.nelhage.com/2011/08/breaking-out-of-kvm/
http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commit;h=505597e4476a6bc219d0ec1362b760d71cb4fdca
http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html
http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html
http://rhn.redhat.com/errata/RHSA-2011-0534.html
http://www.openwall.com/lists/oss-security/2011/05/19/2
http://www.securityfocus.com/bid/47927
https://bugzilla.redhat.com/show_bug.cgi?id=699773
https://github.com/nelhage/virtunoid
https://hermes.opensuse.org/messages/8572547
https://www.ubuntu.com/usn/USN-1145-1/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2011-1751
NVD Published Date:
06/21/2012
NVD Last Modified:
12/07/2016
Source:
MITRE