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2.1
CVSSv2

CVE-2012-3494

Published: 23/11/2012 Updated: 29/08/2017
CVSS v2 Base Score: 2.1 | Impact Score: 2.9 | Exploitability Score: 3.9
VMScore: 187
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P
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Vulnerability Summary

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 previous versions, 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.

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Vendor Advisories

Debian Security Advisories: DSA-2544-1 xen -- denial of service
Multiple denial of service vulnerabilities have been discovered in Xen, an hypervisor The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2012-3494: It was discovered that set_debugreg allows writes to reserved bits of the DR7 debug control register on amd64 (x86-64) paravirtualised guests, allowing ...

References

CWE-264http://secunia.com/advisories/50472http://www.securityfocus.com/bid/55400http://www.securitytracker.com/id?1027479http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerabilityhttp://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=851139http://secunia.com/advisories/50530http://support.citrix.com/article/CTX134708http://www.openwall.com/lists/oss-security/2012/09/05/5http://www.debian.org/security/2012/dsa-2544http://osvdb.org/85197http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.htmlhttp://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.htmlhttp://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.htmlhttp://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.htmlhttp://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.htmlhttp://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.htmlhttp://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.htmlhttp://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.htmlhttp://secunia.com/advisories/51413http://secunia.com/advisories/55082http://security.gentoo.org/glsa/glsa-201309-24.xmlhttp://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.htmlhttps://security.gentoo.org/glsa/201604-03https://exchange.xforce.ibmcloud.com/vulnerabilities/78265https://nvd.nist.govhttps://www.debian.org/security/./dsa-2544
VMScore
CVSSv2
CVSSv3
VMScore
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