CVE-2017-7493
HIGH severity · CVSS 7.8 · Incorrect permission assignment
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://seclists.org/oss-sec/2017/q2/278 ↗
Additional information
- NVD record
- http://seclists.org/oss-sec/2017/q2/278Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=1451709Patch
- https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.htmlPatch
- http://www.securityfocus.com/bid/98574Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.htmlAdvisory
- https://security.gentoo.org/glsa/201706-03Advisory