National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2012-3494 Detail

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      Last Modified:  11/23/2012

Quick Info

CVE Dictionary Entry:
CVE-2012-3494
Original release date:
11/23/2012
Last revised:
08/28/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
2.1 LOW
Vector:
(AV:L/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html External Source SUSE SUSE-SU-2012:1129
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html External Source SUSE SUSE-SU-2012:1132
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html External Source SUSE SUSE-SU-2012:1133
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html External Source SUSE SUSE-SU-2012:1135
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html External Source SUSE SUSE-SU-2012:1162
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html External Source SUSE openSUSE-SU-2012:1172
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html External Source SUSE openSUSE-SU-2012:1174
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html External Source SUSE openSUSE-SU-2012:1572
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html External Source SUSE openSUSE-SU-2012:1573
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html External Source MLIST [Xen-announce] 20120905 Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerability
http://security.gentoo.org/glsa/glsa-201309-24.xml External Source GENTOO GLSA-201309-24
http://support.citrix.com/article/CTX134708 Patch; Vendor Advisory External Source CONFIRM http://support.citrix.com/article/CTX134708
http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability External Source MISC http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability
http://www.debian.org/security/2012/dsa-2544 External Source DEBIAN DSA-2544
http://www.openwall.com/lists/oss-security/2012/09/05/5 External Source MLIST [oss-security] 20120905 Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerability
http://www.securityfocus.com/bid/55400 External Source BID 55400
http://www.securitytracker.com/id?1027479 External Source SECTRACK 1027479
https://bugzilla.redhat.com/show_bug.cgi?id=851139 External Source MISC https://bugzilla.redhat.com/show_bug.cgi?id=851139
https://exchange.xforce.ibmcloud.com/vulnerabilities/78265 External Source XF xen-setdebugreg-dos(78265)
https://security.gentoo.org/glsa/201604-03 External Source GENTOO GLSA-201604-03

Technical Details

Vulnerability Type (View All)

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

Change History 4 change records found - show changes