CVE-2018-18883

Description

An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly restricted.

Category

8.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://xenbits.xen.org/xsa/advisory-278.html patch vendor advisory mitigation
http://www.securitytracker.com/id/1042021 third party advisory vdb entry
http://www.securityfocus.com/bid/105817 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2018-18883?
CVE-2018-18883 has been scored as a high severity vulnerability.
How to fix CVE-2018-18883?
To fix CVE-2018-18883, 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-2018-18883 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-18883 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.
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