Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-7493 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
Base Score | 6.5 |
---|---|
Base Metrics | AV:A/AC:H/Au:S/C:C/I:C/A:C |
Access Vector | Adjacent Network |
Access Complexity | High |
Authentication | Single |
Confidentiality Impact | Complete |
Integrity Impact | Complete |
Availability Impact | Complete |
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
CVSS3 Base Score | 7.1 |
---|---|
CVSS3 Base Metrics | CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Attack Vector | Adjacent Network |
Attack Complexity | High |
Privileges Required | Low |
User Interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity Impact | High |
Availability Impact | High |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
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 OpenStack Platform 11.0 (Ocata) | qemu-kvm-rhev | Not affected |
Red Hat OpenStack Platform 10 | 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 5 | kvm | Not affected |
Red Hat Enterprise Linux 5 | xen | Not affected |