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CVE-2017-7471

Published: 9 July 2018

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 files on a shared host directory. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.

Notes

AuthorNote
ratliff
the conversion to at*() syscalls is not in yakkety/zesty

Priority

High

Cvss 3 Severity Score

9.0

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Not vulnerable

upstream Needs triage

xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

qemu-kvm
Launchpad, Ubuntu, Debian
precise Not vulnerable

trusty Does not exist

upstream Needs triage

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 9.0
Attack vector Adjacent
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H