Vulnerability Details CVE-2011-1751
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."
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 58.0%
CVSS Severity
CVSS v2 Score 7.4
References
- http://blog.nelhage.com/2011/08/breaking-out-of-kvm/
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=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://secunia.com/advisories/44393
- http://secunia.com/advisories/44458
- http://secunia.com/advisories/44648
- http://secunia.com/advisories/44658
- http://secunia.com/advisories/44660
- http://secunia.com/advisories/44900
- http://www.openwall.com/lists/oss-security/2011/05/19/2
- http://www.osvdb.org/73395
- 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/
- http://blog.nelhage.com/2011/08/breaking-out-of-kvm/
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=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://secunia.com/advisories/44393
- http://secunia.com/advisories/44458
- http://secunia.com/advisories/44648
- http://secunia.com/advisories/44658
- http://secunia.com/advisories/44660
- http://secunia.com/advisories/44900
- http://www.openwall.com/lists/oss-security/2011/05/19/2
- http://www.osvdb.org/73395
- 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/
Products affected by CVE-2011-1751
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cpe:2.3:a:qemu:qemu:0.1.0
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cpe:2.3:a:qemu:qemu:0.1.1
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cpe:2.3:a:qemu:qemu:0.1.2
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cpe:2.3:a:qemu:qemu:0.1.3
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cpe:2.3:a:qemu:qemu:0.1.4
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cpe:2.3:a:qemu:qemu:0.1.5
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cpe:2.3:a:qemu:qemu:0.1.6
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cpe:2.3:a:qemu:qemu:0.10.0
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cpe:2.3:a:qemu:qemu:0.10.1
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cpe:2.3:a:qemu:qemu:0.10.2
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cpe:2.3:a:qemu:qemu:0.10.3
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cpe:2.3:a:qemu:qemu:0.10.4
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cpe:2.3:a:qemu:qemu:0.10.5
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cpe:2.3:a:qemu:qemu:0.10.6
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cpe:2.3:a:qemu:qemu:0.11.0
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cpe:2.3:a:qemu:qemu:0.11.0-rc0
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cpe:2.3:a:qemu:qemu:0.11.0-rc1
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cpe:2.3:a:qemu:qemu:0.11.0-rc2
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cpe:2.3:a:qemu:qemu:0.11.1
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cpe:2.3:a:qemu:qemu:0.12.0
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cpe:2.3:a:qemu:qemu:0.12.1
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cpe:2.3:a:qemu:qemu:0.12.2
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cpe:2.3:a:qemu:qemu:0.12.3
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cpe:2.3:a:qemu:qemu:0.12.4
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cpe:2.3:a:qemu:qemu:0.12.5
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cpe:2.3:a:qemu:qemu:0.13.0
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cpe:2.3:a:qemu:qemu:0.14.0
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cpe:2.3:a:qemu:qemu:0.14.1
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cpe:2.3:a:qemu:qemu:0.15.0
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cpe:2.3:a:qemu:qemu:0.2.0
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cpe:2.3:a:qemu:qemu:0.3.0
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cpe:2.3:a:qemu:qemu:0.4.0
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cpe:2.3:a:qemu:qemu:0.4.1
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cpe:2.3:a:qemu:qemu:0.4.2
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cpe:2.3:a:qemu:qemu:0.4.3
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cpe:2.3:a:qemu:qemu:0.5.0
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cpe:2.3:a:qemu:qemu:0.5.1
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cpe:2.3:a:qemu:qemu:0.5.2
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cpe:2.3:a:qemu:qemu:0.5.3
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cpe:2.3:a:qemu:qemu:0.5.4
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cpe:2.3:a:qemu:qemu:0.5.5
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cpe:2.3:a:qemu:qemu:0.6.0
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cpe:2.3:a:qemu:qemu:0.6.1
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cpe:2.3:a:qemu:qemu:0.7.0
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cpe:2.3:a:qemu:qemu:0.7.1
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cpe:2.3:a:qemu:qemu:0.7.2
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cpe:2.3:a:qemu:qemu:0.8.0
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cpe:2.3:a:qemu:qemu:0.8.1
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cpe:2.3:a:qemu:qemu:0.8.2
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cpe:2.3:a:qemu:qemu:0.9.0
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cpe:2.3:a:qemu:qemu:0.9.1
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cpe:2.3:a:qemu:qemu:0.9.1-5
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cpe:2.3:a:qemu:qemu:1.0
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cpe:2.3:a:qemu:qemu:1.0.1
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cpe:2.3:a:qemu:qemu:1.1