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CVE-2015-8550

8.2 · HIGH

Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the fronte…

Published Apr 14, 2016CWE-284EPSS 1.08%

Overview

CVE-2015-8550 is a high-severity vulnerability. It was published on April 14, 2016 and has a CVSS 3.0 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.2, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.

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

Reflists.opensuse.org/opensuse-security-announce/2016-03/msg00094.htmlReflists.opensuse.org/opensuse-security-announce/2016-04/msg00045.htmlReflists.opensuse.org/opensuse-security-announce/2016-07/msg00005.htmlRefwww.debian.org/security/2016/dsa-3434Refwww.debian.org/security/2016/dsa-3471Refwww.debian.org/security/2016/dsa-3519Refwww.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlRefwww.securityfocus.com/bid/79592Refwww.securitytracker.com/id/1034479Refxenbits.xen.org/xsa/advisory-155.html

How CyberStrike helps

Frequently asked questions

What is CVE-2015-8550?

CVE-2015-8550 is a high-severity vulnerability. It was published on April 14, 2016 and has a CVSS 3.0 base score of 8.2 (HIGH).

How severe is CVE-2015-8550?

This vulnerability has a CVSS 3.0 base score of 8.2, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2015-8550?

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-2015-8550?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-8550 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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