CVE-2017-15594

Description

An issue was discovered in Xen through 4.9.x allowing x86 SVM PV guest OS users to cause a denial of service (hypervisor crash) or gain privileges because IDT settings are mishandled during CPU hotplugging.

8.8

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.07%

Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory xen.org

Affected: n/a n/a

References

Link	Tags
https://lists.debian.org/debian-lts-announce/2018/10/msg00021.html	mailing list
https://xenbits.xen.org/xsa/advisory-244.html	patch vendor advisory mitigation
https://www.debian.org/security/2017/dsa-4050	vendor advisory
https://support.citrix.com/article/CTX228867
https://security.gentoo.org/glsa/201801-14	vendor advisory
http://www.securitytracker.com/id/1039568	vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-15594?: CVE-2017-15594 has been scored as a high severity vulnerability.
How to fix CVE-2017-15594?: To fix CVE-2017-15594, 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-2017-15594 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-15594 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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