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CVE-2014-1895

5.8 · MEDIUM

Off-by-one error in the flask_security_avc_cachestats function in xsm/flask/flask_op.c in Xen 4.2.x and 4.3.x, when the maximum number of physical CPUs are in use, allows local users to cause a den…

Published Apr 1, 2014xenCWE-189EPSS 0.53%

Overview

CVE-2014-1895 is a medium-severity vulnerability affecting xen xen. It was published on April 1, 2014 and has a CVSS 2.0 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Off-by-one error in the flask_security_avc_cachestats function in xsm/flask/flask_op.c in Xen 4.2.x and 4.3.x, when the maximum number of physical CPUs are in use, allows local users to cause a denial of service (host crash) or obtain sensitive information from hypervisor memory by leveraging a FLASK_AVC_CACHESTAT hypercall, which triggers a buffer over-read.

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.opensuse.org/opensuse-security-announce/2014-03/msg00011.htmlRefsecurity.gentoo.org/glsa/glsa-201407-03.xmlRefwww.openwall.com/lists/oss-security/2014/02/07/12Refwww.openwall.com/lists/oss-security/2014/02/10/6Refxenbits.xen.org/xsa/advisory-85.htmlReflists.opensuse.org/opensuse-security-announce/2014-03/msg00011.htmlRefsecurity.gentoo.org/glsa/glsa-201407-03.xmlRefwww.openwall.com/lists/oss-security/2014/02/07/12Refwww.openwall.com/lists/oss-security/2014/02/10/6Refxenbits.xen.org/xsa/advisory-85.html

How CyberStrike helps

Frequently asked questions

What is CVE-2014-1895?

CVE-2014-1895 is a medium-severity vulnerability affecting xen xen. It was published on April 1, 2014 and has a CVSS 2.0 base score of 5.8 (MEDIUM).

How severe is CVE-2014-1895?

This vulnerability has a CVSS 2.0 base score of 5.8, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2014-1895?

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-2014-1895?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2014-1895 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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