CVE-2012-3494
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
6.1 Medium
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
28.1%
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.
Affected configurations
References
lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html
lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html
osvdb.org/85197
secunia.com/advisories/50472
secunia.com/advisories/50530
secunia.com/advisories/51413
secunia.com/advisories/55082
security.gentoo.org/glsa/glsa-201309-24.xml
support.citrix.com/article/CTX134708
wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability
www.debian.org/security/2012/dsa-2544
www.openwall.com/lists/oss-security/2012/09/05/5
www.securityfocus.com/bid/55400
www.securitytracker.com/id?1027479
bugzilla.redhat.com/show_bug.cgi?id=851139
exchange.xforce.ibmcloud.com/vulnerabilities/78265
security.gentoo.org/glsa/201604-03
Related
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
6.1 Medium
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
28.1%