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CVE-2017-10917

9.1 · CRITICAL

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…

Published Jul 5, 2017CWE-476EPSS 2.57%

Overview

CVE-2017-10917 is a critical-severity vulnerability. It was published on July 5, 2017 and has a CVSS 3.0 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.0 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.debian.org/security/2017/dsa-3969Refwww.securityfocus.com/bid/99157Refwww.securitytracker.com/id/1038731Refsecurity.gentoo.org/glsa/201708-03Refxenbits.xen.org/xsa/advisory-221.htmlRefwww.debian.org/security/2017/dsa-3969Refwww.securityfocus.com/bid/99157Refwww.securitytracker.com/id/1038731Refsecurity.gentoo.org/glsa/201708-03Refxenbits.xen.org/xsa/advisory-221.html

How CyberStrike helps

Frequently asked questions

What is CVE-2017-10917?

CVE-2017-10917 is a critical-severity vulnerability. It was published on July 5, 2017 and has a CVSS 3.0 base score of 9.1 (CRITICAL).

How severe is CVE-2017-10917?

This vulnerability has a CVSS 3.0 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-10917?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-10917?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-10917 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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