Buffer overflow in Citrix Xenserver
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.2 (High). Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.398 (98.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.398 · newest: 0.398 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secunia.com/advisories/55082 (third-party-advisory)
- www.us-cert.gov/cas/techalerts/TA12-164A.html (US Government Resource, third-party-advisory)
- blog.xen.org/index.php/2012/06/13/the-intel-sysret-privilege-escalation/
- docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-042 (vendor-advisory)
- www.exploit-db.com/exploits/28718/ (exploit)
- bugzilla.redhat.com/show_bug.cgi
- ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2012-003.txt.asc (vendor-advisory)
- security.gentoo.org/glsa/glsa-201309-24.xml (vendor-advisory)
- oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:15596 (signature, vdb-entry)
- www.debian.org/security/2012/dsa-2501 (vendor-advisory)
Frequently asked questions
- What is CVE-2012-0217?
- CVE-2012-0217 is a vulnerability in Citrix Xenserver, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2012-06-12.
- Is CVE-2012-0217 known to be exploited?
- 34 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.