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CVE-2014-8867

4.9 · MEDIUM

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O (MMIO) emulated in the hypervisor, which allows local H…

Published Dec 1, 2014redhatCWE-17EPSS 0.46%

Overview

CVE-2014-8867 is a medium-severity vulnerability affecting redhat enterprise_linux. It was published on December 1, 2014 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.9, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O (MMIO) emulated in the hypervisor, which allows local HVM guests to cause a denial of service (host crash) via unspecified vectors.

Remediation

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux 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
xenxen0Affected

References

Refkb.juniper.net/InfoCenter/index?page=content&id=JSA10705Reflists.opensuse.org/opensuse-security-announce/2015-02/msg00005.htmlReflists.opensuse.org/opensuse-security-announce/2015-02/msg00010.htmlRefrhn.redhat.com/errata/RHSA-2015-0783.htmlRefsecunia.com/advisories/59949Refsecunia.com/advisories/62672Refsupport.citrix.com/article/CTX200288Refsupport.citrix.com/article/CTX201794Refwww.debian.org/security/2015/dsa-3140Refwww.securityfocus.com/bid/71331

How CyberStrike helps

Frequently asked questions

What is CVE-2014-8867?

CVE-2014-8867 is a medium-severity vulnerability affecting redhat enterprise_linux. It was published on December 1, 2014 and has a CVSS 2.0 base score of 4.9 (MEDIUM).

How severe is CVE-2014-8867?

This vulnerability has a CVSS 2.0 base score of 4.9, rated MEDIUM. 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-2014-8867?

Check the references section for vendor advisories and patches from redhat. Update enterprise_linux 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-2014-8867?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-8867 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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