Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2011-2901

5.5 · MEDIUM

Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-a…

Published Oct 1, 2013xenCWE-399EPSS 0.59%

Overview

CVE-2011-2901 is a medium-severity vulnerability affecting xen xen. It was published on October 1, 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

Off-by-one error in the __addr_ok macro in Xen 3.3 and earlier allows local 64 bit PV guest administrators to cause a denial of service (host crash) via unspecified hypercalls that ignore virtual-address bits.

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
xenxen0Affected

References

Refrhn.redhat.com/errata/RHSA-2011-1212.htmlRefsecunia.com/advisories/55082Refsecurity.gentoo.org/glsa/glsa-201309-24.xmlRefwww.openwall.com/lists/oss-security/2011/09/02/2Refbugzilla.redhat.com/show_bug.cgi?id=728042Refrhn.redhat.com/errata/RHSA-2011-1212.htmlRefsecunia.com/advisories/55082Refsecurity.gentoo.org/glsa/glsa-201309-24.xmlRefwww.openwall.com/lists/oss-security/2011/09/02/2Refbugzilla.redhat.com/show_bug.cgi?id=728042

How CyberStrike helps

Frequently asked questions

What is CVE-2011-2901?

CVE-2011-2901 is a medium-severity vulnerability affecting xen xen. It was published on October 1, 2013 and has a CVSS 2.0 base score of 5.5 (MEDIUM).

How severe is CVE-2011-2901?

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-2011-2901?

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-2011-2901?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-2901 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.

Related MEDIUM CVEs from 2011

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999