Critical severity · published Jul 9, 2018
CVE-2017-7471
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
9.0
CVSS
0.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QE
Qemu · Qemu
through 2.8.1.1; 2.9.0; 2.9.0; 2.9.0; 2.9.0; 2.9.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-7471
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-7471
Mailing List
http://www.openwall.com/lists/oss-security/2017/04/19/2
Third Party Advisory
http://www.securityfocus.com/bid/97970
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7471
git.qemu.org
https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=9c6b899f7a46893ab3b671e341a2234e9c0c060e
Third Party Advisory
https://security.gentoo.org/glsa/201706-03
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