CVE-2017-7493

MEDIUM

Description

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.

References

http://seclists.org/oss-sec/2017/q2/278

http://www.securityfocus.com/bid/98574

https://bugzilla.redhat.com/show_bug.cgi?id=1451709

https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html

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

https://security.gentoo.org/glsa/201706-03

Details

Source: MITRE

Published: 2017-05-17

Updated: 2018-09-07

Type: CWE-284

Risk Information

CVSS v2.0

Base Score: 4.6

Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P)

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH