CVE-2012-0217
kfreebsd-8 - privilege escalation
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.
How to fix CVE-2012-0217
To remediate CVE-2012-0217, upgrade the affected package to a fixed version below.
- —upgrade to 8.1+dfsg-8+squeeze3 or later
- —upgrade to 4.1.3~rc1+hg-20120614.a9c0a89c08f2-1 or later
- —upgrade to 4.0.1-5.2 or later
Is CVE-2012-0217 being exploited?
Likely — EPSS is 88.2%, placing CVE-2012-0217 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (3)
- from 0, < 8.1+dfsg-8+squeeze3
- from 0, < 4.1.3~rc1+hg-20120614.a9c0a89c08f2-1
- from 0, < 4.0.1-5.2