CVE-2017-7718

Impact:
Moderate
Public Date:
2017-03-14
CWE:
CWE-125
Bugzilla:
1443441: CVE-2017-7718 Qemu: display: cirrus: OOB read access issue
An out-of-bounds access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data using bitblt functions (for example, cirrus_bitblt_rop_fwd_transp_). A privileged user inside a guest could use this flaw to crash the QEMU process, resulting in denial of service.

Find out more about CVE-2017-7718 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

Red Hat Enterprise Linux 5:
This vulnerability has been rated as having a security impact of Moderate. After evaluation and in accordance with the criteria noted in the product support life cycle, there are no plans to address this issue in an upcoming release. Please contact Red Hat Support for further information.

CVSS v2 metrics

Base Score 2.9
Base Metrics AV:A/AC:H/Au:S/C:P/I:N/A:P
Access Vector Adjacent Network
Access Complexity High
Authentication Single
Confidentiality Impact Partial
Integrity Impact None
Availability Impact Partial

CVSS v3 metrics

CVSS3 Base Score 4
CVSS3 Base Metrics CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L
Attack Vector Adjacent Network
Attack Complexity High
Privileges Required High
User Interaction None
Scope Changed
Confidentiality Low
Integrity Impact None
Availability Impact Low

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

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 7 (qemu-kvm-rhev) RHSA-2017:0980 2017-04-18
Red Hat OpenStack Platform 10 (qemu-kvm-rhev) RHSA-2017:0988 2017-04-18
Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 (qemu-kvm-rhev) RHSA-2017:0982 2017-04-18
RHEV Agents (vdsm) (qemu-kvm-rhev) RHSA-2017:1205 2017-05-09
Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts (qemu-kvm-rhev) RHSA-2017:1431 2017-06-13
Red Hat OpenStack Platform 8.0 (Liberty) (qemu-kvm-rhev) RHSA-2017:0983 2017-04-18
Red Hat OpenStack Platform 9.0 (qemu-kvm-rhev) RHSA-2017:0984 2017-04-18
Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 (qemu-kvm-rhev) RHSA-2017:0981 2017-04-18
Red Hat Enterprise Linux 7 (qemu-kvm) RHSA-2017:1430 2017-06-13
Red Hat Enterprise Linux OpenStack Platform 5.0 (Icehouse) for RHEL 6 (qemu-kvm-rhev) RHSA-2017:1441 2017-06-14
Red Hat Enterprise Linux 6 (qemu-kvm) RHSA-2017:1206 2017-05-09

Affected Packages State

Platform Package State
Red Hat OpenStack Platform 11.0 (Ocata) qemu-kvm-rhev Not affected
Red Hat Enterprise Linux 5 xen Will not fix
Red Hat Enterprise Linux 5 kvm Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Acknowledgements

Red Hat would like to thank Jiangxin (PSIRT Huawei Inc.) for reporting this issue.
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