CVE-2016-9381

Impact:
Important
Public Date:
2016-11-22
IAVA:
2016-B-0177
Bugzilla:
1392938: CVE-2016-9381 xsa197 xen: qemu incautious about shared ring processing (XSA-197)

The MITRE CVE dictionary describes this issue as:

Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.

Find out more about CVE-2016-9381 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 6
Base Metrics AV:N/AC:M/Au:S/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 8
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required High
User Interaction None
Scope Changed
Confidentiality High
Integrity Impact High
Availability Impact High

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

Affected Packages State

Platform Package State
Red Hat Virtualization 4 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 Under investigation
Red Hat Enterprise Linux 7 qemu-kvm Under investigation
Red Hat Enterprise Linux 6 qemu-kvm Under investigation
Red Hat Enterprise Linux 6 qemu-kvm-rhev Under investigation
Red Hat Enterprise Linux 5 kvm Under investigation
Red Hat Enterprise Linux 5 xen Will not fix

Acknowledgements

Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges yanghongke (Huawei Security Test Team) as the original reporter.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation

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