CVE-2016-4952

Impact:
Moderate
Public Date:
2016-05-23
CWE:
CWE-787
Bugzilla:
1334384: CVE-2016-4952 Qemu: scsi: pvscsi: out-of-bounds access issue in pvsci_ring_init_msg/data routines
Quick Emulator(Qemu) built with the VMWARE PVSCSI paravirtual SCSI bus emulation support is vulnerable to an OOB r/w access issue. It could occur while processing SCSI commands 'PVSCSI_CMD_SETUP_RINGS' or 'PVSCSI_CMD_SETUP_MSG_RING'. A privileged user inside guest could use this flaw to crash the Qemu process resulting in DoS.

Find out more about CVE-2016-4952 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 3.8
Base Metrics AV:A/AC:M/Au:S/C:N/I:P/A:P
Access Vector Adjacent Network
Access Complexity Medium
Authentication Single
Confidentiality Impact None
Integrity Impact Partial
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat OpenStack Platform 9.0 qemu-kvm-rhev Not affected
Red Hat OpenStack Platform 8.0 (Liberty) qemu-kvm-rhev Not affected
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) qemu-kvm-rhev Not affected
Red Hat Enterprise Linux 7 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux 7 qemu-kvm Not affected
Red Hat Enterprise Linux 6 qemu-kvm Not affected
Red Hat Enterprise Linux 6 qemu-kvm-rhev Not affected
Red Hat Enterprise Linux 5 kvm Not affected
Red Hat Enterprise Linux 5 xen Not affected
RHEV Manager 3 qemu-kvm-rhev Not affected

Acknowledgements

Red Hat would like to thank Li Qiang (Qihoo 360 Inc.) for reporting this issue.

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