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CVE-2012-0217

7.2 · HIGH

The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix XenServer 6.0.2 and earlier and other products; Oracle Solaris 11 and earlier; illumos before r13724; Joyent…

Published Jun 12, 2012freebsdCWE-119EPSS 39.84%

Overview

CVE-2012-0217 is a high-severity vulnerability affecting freebsd freebsd. It was published on June 12, 2012 and has a CVSS 2.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix XenServer 6.0.2 and earlier and other products; Oracle Solaris 11 and earlier; illumos before r13724; Joyent SmartOS before 20120614T184600Z; FreeBSD before 9.0-RELEASE-p3; NetBSD 6.0 Beta and earlier; Microsoft Windows Server 2008 R2 and R2 SP1 and Windows 7 Gold and SP1; and possibly other operating systems, when running on an Intel processor, incorrectly uses the sysret path in cases where a certain address is not a canonical address, which allows local users to gain privileges via a crafted application. NOTE: because this issue is due to incorrect use of the Intel specification, it should have been split into separate identifiers; however, there was some value in preserving the original mapping of the multi-codebase coordinated-disclosure effort to a single identifier.

Remediation

Check the references section for vendor advisories and patches from freebsd. Update freebsd 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
freebsdfreebsd0Affected
illumosillumos0Affected
joyentsmartos0Affected
xenxen0Affected
citrixxenserver0Affected
netbsdnetbsd0Affected
sunsunos0Affected

References

Refblog.illumos.org/2012/06/14/illumos-vulnerability-patched/Refblog.xen.org/index.php/2012/06/13/the-intel-sysret-privilege-escalation/Refftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2012-003.txt.ascReflists.xen.org/archives/html/xen-announce/2012-06/msg00001.htmlReflists.xen.org/archives/html/xen-devel/2012-06/msg01072.htmlRefsecunia.com/advisories/55082Refsecurity.freebsd.org/advisories/FreeBSD-SA-12:04.sysret.ascRefsecurity.gentoo.org/glsa/glsa-201309-24.xmlRefsmartos.org/2012/06/15/smartos-news-3/Refsupport.citrix.com/article/CTX133161

How CyberStrike helps

Frequently asked questions

What is CVE-2012-0217?

CVE-2012-0217 is a high-severity vulnerability affecting freebsd freebsd. It was published on June 12, 2012 and has a CVSS 2.0 base score of 7.2 (HIGH).

How severe is CVE-2012-0217?

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. 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-2012-0217?

Check the references section for vendor advisories and patches from freebsd. Update freebsd 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-2012-0217?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2012-0217 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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