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CVE-2012-3496

4.7 · MEDIUM

XENMEM_populate_physmap in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when translating paging mode is not used, allows local PV OS guest kernels to cause a denial of service (BU…

Published Nov 23, 2012citrixCWE-16EPSS 0.42%

Overview

CVE-2012-3496 is a medium-severity vulnerability affecting citrix xenserver. It was published on November 23, 2012 and has a CVSS 2.0 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

XENMEM_populate_physmap in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when translating paging mode is not used, allows local PV OS guest kernels to cause a denial of service (BUG triggered and host crash) via invalid flags such as MEMF_populate_on_demand.

Remediation

Check the references section for vendor advisories and patches from citrix. Update xenserver 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
citrixxenserver0Affected

References

Reflists.opensuse.org/opensuse-security-announce/2012-09/msg00003.htmlReflists.opensuse.org/opensuse-security-announce/2012-09/msg00004.htmlReflists.opensuse.org/opensuse-security-announce/2012-09/msg00012.htmlReflists.opensuse.org/opensuse-security-announce/2012-09/msg00017.htmlReflists.opensuse.org/opensuse-security-announce/2012-09/msg00018.htmlReflists.opensuse.org/opensuse-security-announce/2012-11/msg00017.htmlReflists.opensuse.org/opensuse-security-announce/2012-11/msg00018.htmlReflists.xen.org/archives/html/xen-announce/2012-09/msg00002.htmlRefsecunia.com/advisories/50472Refsecunia.com/advisories/50530

How CyberStrike helps

Frequently asked questions

What is CVE-2012-3496?

CVE-2012-3496 is a medium-severity vulnerability affecting citrix xenserver. It was published on November 23, 2012 and has a CVSS 2.0 base score of 4.7 (MEDIUM).

How severe is CVE-2012-3496?

This vulnerability has a CVSS 2.0 base score of 4.7, 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-2012-3496?

Check the references section for vendor advisories and patches from citrix. Update xenserver 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-2012-3496?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-3496 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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