Vulnerability CVE-2017-7471
Published: 2018-07-09

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 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.

Type:

CWE-732

CVSS2 => (AV:A/AC:L/Au:S/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.7/10
10/10
5.1/10
Exploit range
Attack complexity
Authentication
Adjacent network
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
QEMU -> QEMU 

 References:
http://www.openwall.com/lists/oss-security/2017/04/19/2
http://www.securityfocus.com/bid/97970
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7471
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=9c6b899f7a46893ab3b671e341a2234e9c0c060e
https://security.gentoo.org/glsa/201706-03
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