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.

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

Acknowledgements

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