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Vulnerability Details : 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.
Publish Date : 2012-06-12 Last Update Date : 2013-10-10
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) OverflowGain privileges
CWE ID 119

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important
7.9
AV:A/AC:M/Au:N/C:C/I:C/A:C 2012-04-17 2012-06-12
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- Related OVAL Definitions

Title Definition Id Class Family
CRITICAL PATCH UPDATE OCTOBER 2012 oval:org.mitre.oval:def:19281 unix
DSA-2501-1 xen - several oval:org.mitre.oval:def:18625 unix
DSA-2508-1 kfreebsd-8 - privilege escalation oval:org.mitre.oval:def:19861 unix
ELSA-2012-0721 -- kernel security update (important) oval:org.mitre.oval:def:27730 unix
ELSA-2012-0721-1 -- kernel security update (important) oval:org.mitre.oval:def:27635 unix
ELSA-2012:0721: kernel security update (Important) oval:org.mitre.oval:def:22895 unix
RHSA-2012:0721: kernel security update (Important) oval:org.mitre.oval:def:21347 unix
RHSA-2012:0721: kernel security update (Important) oval:com.redhat.rhsa:def:20120721 unix
User Mode Scheduler Memory Corruption Vulnerability (CVE-2012-0217) oval:org.mitre.oval:def:15596 windows
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2012-0217

# Product Type Vendor Product Version Update Edition Language
1 Application Citrix Xenserver 6.0 Version Details Vulnerabilities
2 Application Citrix Xenserver 6.0.2 Version Details Vulnerabilities
3 OS Freebsd Freebsd 9.0 Version Details Vulnerabilities
4 OS Illumos Illumos R13723 Version Details Vulnerabilities
5 OS Joyent Smartos 20120614 Version Details Vulnerabilities
6 OS Microsoft Windows 7 X64 Version Details Vulnerabilities
7 OS Microsoft Windows 7 SP1 X64 Version Details Vulnerabilities
8 OS Microsoft Windows Server 2003 SP2 Version Details Vulnerabilities
9 OS Microsoft Windows Server 2008 R2 X64 Version Details Vulnerabilities
10 OS Microsoft Windows Server 2008 R2 SP1 X64 Version Details Vulnerabilities
11 OS Microsoft Windows Xp SP3 Version Details Vulnerabilities
12 OS Netbsd Netbsd 6.0 Beta Version Details Vulnerabilities
13 OS SUN Sunos 5.11 Version Details Vulnerabilities
14 OS XEN XEN 4.0.0 Version Details Vulnerabilities
15 OS XEN XEN 4.0.1 Version Details Vulnerabilities
16 OS XEN XEN 4.0.2 Version Details Vulnerabilities
17 OS XEN XEN 4.0.3 Version Details Vulnerabilities
18 OS XEN XEN 4.0.4 Version Details Vulnerabilities
19 OS XEN XEN 4.1.0 Version Details Vulnerabilities
20 OS XEN XEN 4.1.1 Version Details Vulnerabilities
21 OS XEN XEN 4.1.2 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Citrix Xenserver 2
Freebsd Freebsd 1
Illumos Illumos 1
Joyent Smartos 1
Microsoft Windows 7 2
Microsoft Windows Server 2003 1
Microsoft Windows Server 2008 2
Microsoft Windows Xp 1
Netbsd Netbsd 1
SUN Sunos 1
XEN XEN 8

- References For CVE-2012-0217

http://www.kb.cert.org/vuls/id/649219
CERT-VN VU#649219
http://blog.illumos.org/2012/06/14/illumos-vulnerability-patched/ CONFIRM
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2012-003.txt.asc
NETBSD NetBSD-SA2012-003
http://blog.xen.org/index.php/2012/06/13/the-intel-sysret-privilege-escalation/ CONFIRM
http://lists.xen.org/archives/html/xen-announce/2012-06/msg00001.html
MLIST [xen-announce] 20120612 Xen Security Advisory 7 (CVE-2012-0217) - PV privilege escalation
http://lists.xen.org/archives/html/xen-devel/2012-06/msg01072.html
MLIST [xen-devel] 20120619 Security vulnerability process, and CVE-2012-0217
http://secunia.com/advisories/55082
SECUNIA 55082
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
MANDRIVA MDVSA-2013:150
http://www.debian.org/security/2012/dsa-2508
DEBIAN DSA-2508
http://security.freebsd.org/advisories/FreeBSD-SA-12:04.sysret.asc
FREEBSD FreeBSD-SA-12:04
http://security.gentoo.org/glsa/glsa-201309-24.xml
GENTOO GLSA-201309-24
http://support.citrix.com/article/CTX133161 CONFIRM
http://www.debian.org/security/2012/dsa-2501
DEBIAN DSA-2501
http://wiki.smartos.org/display/DOC/SmartOS+Change+Log#SmartOSChangeLog-June14%2C2012 CONFIRM
http://smartos.org/2012/06/15/smartos-news-3/ CONFIRM
http://www.oracle.com/technetwork/topics/security/cpuoct2012-1515893.html CONFIRM
http://technet.microsoft.com/en-us/security/bulletin/ms12-042
Microsoft Security Bulletin MS12-042 MS12-042 - Important : Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (2711167) - Version: 1.0 Severity Rating: Important Revision Note: V1.0 (June 12, 2012): Bulletin published. Summary: This security update resolves one privately reported vulnerability and one publicly disclosed vulnerability in Microsoft Windows. The vulnerabilities could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application that exploits the vulnerability. An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability. The vulnerability could not be exploited remotely or by anonymous users.Release Date:2012-06-12
https://bugzilla.redhat.com/show_bug.cgi?id=813428 CONFIRM
https://www.illumos.org/issues/2873 CONFIRM
http://www.us-cert.gov/cas/techalerts/TA12-164A.html
CERT TA12-164A

- Metasploit Modules Related To CVE-2012-0217

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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