Explain CVE-2012-0217
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.
Affected Products: n/a
References: [{'name': '55082', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/55082'}, {'name': 'TA12-164A', 'tags': ['third-party-advisory', 'x_refsource_CERT'], 'url': 'http://www.us-cert.gov/cas/techalerts/TA12-164A.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://blog.xen.org/index.php/2012/06/13/the-intel-sysret-privilege-escalation/'}, {'name': 'MS12-042', 'tags': ['vendor-advisory', 'x_refsource_MS'], 'url': 'https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-042'}, {'name': '28718', 'tags': ['exploit', 'x_refsource_EXPLOIT-DB'], 'url': 'https://www.exploit-db.com/exploits/28718/'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=813428'}, {'name': 'NetBSD-SA2012-003', 'tags': ['vendor-advisory', 'x_refsource_NETBSD'], 'url': 'http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2012-003.txt.asc'}, {'name': 'GLSA-201309-24', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-201309-24.xml'}, {'name': 'oval:org.mitre.oval:def:15596', 'tags': ['vdb-entry', 'signature', 'x_refsource_OVAL'], 'url': 'https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15596'}, {'name': 'DSA-2501', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2012/dsa-2501'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://blog.illumos.org/2012/06/14/illumos-vulnerability-patched/'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://www.illumos.org/issues/2873'}, {'name': '[xen-devel] 20120619 Security vulnerability process, and CVE-2012-0217', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://lists.xen.org/archives/html/xen-devel/2012-06/msg01072.html'}, {'name': 'DSA-2508', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2012/dsa-2508'}, {'name': '[xen-announce] 20120612 Xen Security Advisory 7 (CVE-2012-0217) - PV privilege escalation', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://lists.xen.org/archives/html/xen-announce/2012-06/msg00001.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.oracle.com/technetwork/topics/security/cpuoct2012-1515893.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://support.citrix.com/article/CTX133161'}, {'name': '46508', 'tags': ['exploit', 'x_refsource_EXPLOIT-DB'], 'url': 'https://www.exploit-db.com/exploits/46508/'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://smartos.org/2012/06/15/smartos-news-3/'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://wiki.smartos.org/display/DOC/SmartOS+Change+Log#SmartOSChangeLog-June14%2C2012'}, {'name': 'VU#649219', 'tags': ['third-party-advisory', 'x_refsource_CERT-VN'], 'url': 'http://www.kb.cert.org/vuls/id/649219'}, {'name': 'MDVSA-2013:150', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2013:150'}, {'name': 'FreeBSD-SA-12:04', 'tags': ['vendor-advisory', 'x_refsource_FREEBSD'], 'url': 'http://security.freebsd.org/advisories/FreeBSD-SA-12:04.sysret.asc'}]
CVE State: PUBLISHED