National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2012-3494 Detail

Current Description

The set_debugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service (host crash) by writing to the reserved bits of the DR7 debug control register.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html
http://security.gentoo.org/glsa/glsa-201309-24.xml
http://support.citrix.com/article/CTX134708 Patch Vendor Advisory
http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability
http://www.debian.org/security/2012/dsa-2544
http://www.openwall.com/lists/oss-security/2012/09/05/5
http://www.securityfocus.com/bid/55400
http://www.securitytracker.com/id?1027479
https://bugzilla.redhat.com/show_bug.cgi?id=851139
https://exchange.xforce.ibmcloud.com/vulnerabilities/78265
https://security.gentoo.org/glsa/201604-03

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x64:*
     Show Matching CPE(s)
Up to (including)
6.0.2
 cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x86:*
     Show Matching CPE(s)
Up to (including)
6.0.2
 cpe:2.3:o:xen:xen:4.0.0:-:*:*:*:*:x64:*
     Show Matching CPE(s)
 cpe:2.3:o:xen:xen:4.0.0:-:*:*:*:*:x86:*
     Show Matching CPE(s)
 cpe:2.3:o:xen:xen:4.1.0:-:*:*:*:*:x64:*
     Show Matching CPE(s)
 cpe:2.3:o:xen:xen:4.1.0:-:*:*:*:*:x86:*
     Show Matching CPE(s)
 cpe:2.3:o:xen:xen:4.2.0:-:*:*:*:*:x64:*
     Show Matching CPE(s)
 cpe:2.3:o:xen:xen:4.2.0:-:*:*:*:*:x86:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2012-3494
NVD Published Date:
11/23/2012
NVD Last Modified:
08/28/2017