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CVE-2017-7493

Published: 17 May 2017

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.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
qemu
Launchpad, Ubuntu, Debian
groovy Not vulnerable
(1:2.10+dfsg-0ubuntu1)
hirsute Not vulnerable
(1:2.10+dfsg-0ubuntu1)
artful Not vulnerable
(1:2.10+dfsg-0ubuntu1)
bionic Not vulnerable
(1:2.10+dfsg-0ubuntu1)
cosmic Not vulnerable
(1:2.10+dfsg-0ubuntu1)
disco Not vulnerable
(1:2.10+dfsg-0ubuntu1)
eoan Not vulnerable
(1:2.10+dfsg-0ubuntu1)
focal Not vulnerable
(1:2.10+dfsg-0ubuntu1)
trusty
Released (2.0.0+dfsg-2ubuntu1.35)
upstream Needed

xenial
Released (1:2.5+dfsg-5ubuntu10.15)
yakkety Ignored
(end of life)
zesty
Released (1:2.8+dfsg-3ubuntu2.4)
Patches:
other: https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html
upstream: https://git.qemu.org/gitweb.cgi?p=qemu.git;a=commit;h=7a95434e0ca8a037fd8aa1a2e2461f92585eb77b

qemu-kvm
Launchpad, Ubuntu, Debian
groovy Does not exist

hirsute Does not exist

artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream Needed

xenial Does not exist

yakkety Does not exist

zesty Does not exist

Patches:


other: https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H