CVE-2017-10917

Description

Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.

Category

9.1
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.84% Top 30%
Vendor Advisory gentoo.org Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://security.gentoo.org/glsa/201708-03 vendor advisory
http://www.debian.org/security/2017/dsa-3969 vendor advisory
https://xenbits.xen.org/xsa/advisory-221.html mailing list mitigation third party advisory
http://www.securityfocus.com/bid/99157 vdb entry
http://www.securitytracker.com/id/1038731 vdb entry

Frequently Asked Questions

What is the severity of CVE-2017-10917?
CVE-2017-10917 has been scored as a critical severity vulnerability.
How to fix CVE-2017-10917?
To fix CVE-2017-10917, 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-2017-10917 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-10917 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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