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CVE-2011-2519

5.5 · MEDIUM

Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) vi…

Published Dec 27, 2013xenCWE-476EPSS 0.67%

Overview

CVE-2011-2519 is a medium-severity vulnerability affecting xen xen. It was published on December 27, 2013 and has a CVSS 2.0 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.

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
xenxen>= 0, < 3.3.0Affected

References

Refrhn.redhat.com/errata/RHSA-2011-1212.htmlRefwww.openwall.com/lists/oss-security/2011/08/30/1Refxenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644Refbugzilla.redhat.com/show_bug.cgi?id=718882Refrhn.redhat.com/errata/RHSA-2011-1212.htmlRefwww.openwall.com/lists/oss-security/2011/08/30/1Refxenbits.xen.org/hg/xen-3.1-testing.hg/rev/15644Refbugzilla.redhat.com/show_bug.cgi?id=718882

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2519?

CVE-2011-2519 is a medium-severity vulnerability affecting xen xen. It was published on December 27, 2013 and has a CVSS 2.0 base score of 5.5 (MEDIUM).

How severe is CVE-2011-2519?

This vulnerability has a CVSS 2.0 base score of 5.5, 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-2011-2519?

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-2011-2519?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2519 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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