CVE-2017-8903

Description

Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213.

8.8

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 0.06%

Vendor Advisory gentoo.org Vendor Advisory xenproject.org Vendor Advisory xen.org

Affected: n/a n/a

References

Link	Tags
https://security.gentoo.org/glsa/201705-11	vendor advisory
http://www.securitytracker.com/id/1038386	vdb entry
https://xenbits.xen.org/xsa/advisory-213.html	patch vendor advisory mitigation
http://www.securityfocus.com/bid/98426	vdb entry
https://blog.xenproject.org/2017/05/02/updates-on-xsa-213-xsa-214-and-xsa-215/	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-8903?: CVE-2017-8903 has been scored as a high severity vulnerability.
How to fix CVE-2017-8903?: To fix CVE-2017-8903, 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-2017-8903 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2017-8903 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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