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CVE-2013-4361

2.1 · LOW

The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by…

Published Oct 1, 2013xenCWE-200EPSS 0.40%

Overview

CVE-2013-4361 is a low-severity vulnerability affecting xen xen. It was published on October 1, 2013 and has a CVSS 2.0 base score of 2.1 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The fbld instruction emulation in Xen 3.3.x through 4.3.x does not use the correct variable for the source effective address, which allows local HVM guests to obtain hypervisor stack information by reading the values used by the 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

References

Reflists.opensuse.org/opensuse-security-announce/2014-03/msg00021.htmlReflists.opensuse.org/opensuse-updates/2013-11/msg00009.htmlRefsecurity.gentoo.org/glsa/glsa-201407-03.xmlRefwww.debian.org/security/2014/dsa-3006Refwww.openwall.com/lists/oss-security/2013/09/30/3Reflists.opensuse.org/opensuse-security-announce/2014-03/msg00021.htmlReflists.opensuse.org/opensuse-updates/2013-11/msg00009.htmlRefsecurity.gentoo.org/glsa/glsa-201407-03.xmlRefwww.debian.org/security/2014/dsa-3006Refwww.openwall.com/lists/oss-security/2013/09/30/3

How CyberStrike helps

Frequently asked questions

What is CVE-2013-4361?

CVE-2013-4361 is a low-severity vulnerability affecting xen xen. It was published on October 1, 2013 and has a CVSS 2.0 base score of 2.1 (LOW).

How severe is CVE-2013-4361?

This vulnerability has a CVSS 2.0 base score of 2.1, rated LOW. 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-2013-4361?

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-2013-4361?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-4361 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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