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CVE-2014-1666

8.3 · HIGH

The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which…

Published Jan 26, 2014xenCWE-264EPSS 0.88%

Overview

CVE-2014-1666 is a high-severity vulnerability affecting xen xen. It was published on January 26, 2014 and has a CVSS 2.0 base score of 8.3 (HIGH).

This vulnerability has a CVSS 2.0 base score of 8.3, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.

Remediation

Check the references section for vendor advisories and patches from xen. Update xen to the latest patched version. 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.

Affected products

VendorProductVersionsStatus

References

Reflists.fedoraproject.org/pipermail/package-announce/2014-February/127580.htmlReflists.fedoraproject.org/pipermail/package-announce/2014-February/127607.htmlReflists.opensuse.org/opensuse-security-announce/2014-03/msg00010.htmlReflists.opensuse.org/opensuse-security-announce/2014-03/msg00011.htmlRefosvdb.org/102536Refsecunia.com/advisories/56650Refsecurity.gentoo.org/glsa/glsa-201407-03.xmlRefsupport.citrix.com/article/CTX200288Refwww.openwall.com/lists/oss-security/2014/01/24/6Refwww.securityfocus.com/bid/65125

How CyberStrike helps

Frequently asked questions

What is CVE-2014-1666?

CVE-2014-1666 is a high-severity vulnerability affecting xen xen. It was published on January 26, 2014 and has a CVSS 2.0 base score of 8.3 (HIGH).

How severe is CVE-2014-1666?

This vulnerability has a CVSS 2.0 base score of 8.3, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2014-1666?

Check the references section for vendor advisories and patches from xen. Update xen to the latest patched version. 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-2014-1666?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-1666 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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