CVE-2017-17566

Description

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page.

7.8

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.06%

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

Affected: n/a n/a

References

Link	Tags
http://www.securitytracker.com/id/1040768	vdb entry
https://xenbits.xen.org/xsa/advisory-248.html	patch vendor advisory mitigation
https://lists.debian.org/debian-lts-announce/2018/01/msg00003.html	mailing list
http://www.securityfocus.com/bid/102167	vdb entry
https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html	mailing list
http://www.openwall.com/lists/oss-security/2017/12/12/4	mailing list
https://security.gentoo.org/glsa/201801-14	vendor advisory
https://www.debian.org/security/2018/dsa-4112	vendor advisory
https://support.citrix.com/article/CTX232096

Frequently Asked Questions

What is the severity of CVE-2017-17566?: CVE-2017-17566 has been scored as a high severity vulnerability.
How to fix CVE-2017-17566?: To fix CVE-2017-17566, 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-2017-17566 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-17566 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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