CVE-2019-17347

Description

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because a guest can manipulate its virtualised %cr4 in a way that is incompatible with Linux (and possibly other guest kernels).

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.14%
Vendor Advisory debian.org Vendor Advisory xen.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://xenbits.xen.org/xsa/advisory-293.html patch vendor advisory
https://xenbits.xen.org/xsa/advisory-293.html vendor advisory
http://www.openwall.com/lists/oss-security/2019/10/25/8 mailing list
https://www.debian.org/security/2020/dsa-4602 third party advisory vendor advisory
https://seclists.org/bugtraq/2020/Jan/21 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2019-17347?
CVE-2019-17347 has been scored as a high severity vulnerability.
How to fix CVE-2019-17347?
To fix CVE-2019-17347, 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-2019-17347 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-17347 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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