Vulnerability CVE-2012-0217
Published: 2012-06-12   Modified: 2012-06-13

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.

See advisories in our WLB2 database:
Topic
Author
Date
High
FreeBSD Intel SYSRET Privilege Escalation
Rafal Wojtczuk
07.03.2019

Type:

CWE-119

 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
XEN -> XEN 
SUN -> Sunos 
Netbsd -> Netbsd 
Microsoft -> Windows 7 
Microsoft -> Windows server 2003 
Microsoft -> Windows server 2008 
Microsoft -> Windows xp 
Joyent -> Smartos 
Illumos -> Illumos 
Freebsd -> Freebsd 
Citrix -> Xenserver 

 References:
http://blog.illumos.org/2012/06/14/illumos-vulnerability-patched/
http://blog.xen.org/index.php/2012/06/13/the-intel-sysret-privilege-escalation/
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2012-003.txt.asc
http://lists.xen.org/archives/html/xen-announce/2012-06/msg00001.html
http://lists.xen.org/archives/html/xen-devel/2012-06/msg01072.html
http://security.freebsd.org/advisories/FreeBSD-SA-12:04.sysret.asc
http://security.gentoo.org/glsa/glsa-201309-24.xml
http://smartos.org/2012/06/15/smartos-news-3/
http://support.citrix.com/article/CTX133161
http://wiki.smartos.org/display/DOC/SmartOS+Change+Log#SmartOSChangeLog-June14%2C2012
http://www.debian.org/security/2012/dsa-2501
http://www.debian.org/security/2012/dsa-2508
http://www.kb.cert.org/vuls/id/649219
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
http://www.oracle.com/technetwork/topics/security/cpuoct2012-1515893.html
http://www.us-cert.gov/cas/techalerts/TA12-164A.html
https://bugzilla.redhat.com/show_bug.cgi?id=813428
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-042
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15596
https://www.exploit-db.com/exploits/28718/
https://www.exploit-db.com/exploits/46508/
https://www.illumos.org/issues/2873
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