CVE-2017-7493

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory gentoo.org
Affected: QEMU qemu
Published at:
Updated at:

References

Link Tags
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html third party advisory mailing list
https://security.gentoo.org/glsa/201706-03 third party advisory vendor advisory
http://www.securityfocus.com/bid/98574 vdb entry third party advisory
https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html mailing list third party advisory patch
https://bugzilla.redhat.com/show_bug.cgi?id=1451709 issue tracking third party advisory patch
http://seclists.org/oss-sec/2017/q2/278 mailing list third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2017-7493?
CVE-2017-7493 has been scored as a high severity vulnerability.
How to fix CVE-2017-7493?
To fix CVE-2017-7493, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7493 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-7493 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7493?
CVE-2017-7493 affects QEMU qemu.
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