CVE-2012-3494

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.

Category

2.1
CVSS
Severity: Low
CVSS 2.0 •
EPSS 0.11%
Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory secunia.com Vendor Advisory secunia.com Vendor Advisory citrix.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/55082 third party advisory
http://secunia.com/advisories/50530 third party advisory vendor advisory
http://secunia.com/advisories/51413 third party advisory
http://security.gentoo.org/glsa/glsa-201309-24.xml vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html vendor advisory
http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability
https://bugzilla.redhat.com/show_bug.cgi?id=851139
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html vendor advisory
http://secunia.com/advisories/50472 third party advisory vendor advisory
http://www.securityfocus.com/bid/55400 vdb entry
http://www.openwall.com/lists/oss-security/2012/09/05/5 mailing list
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html vendor advisory
https://security.gentoo.org/glsa/201604-03 vendor advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/78265 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html vendor advisory
http://support.citrix.com/article/CTX134708 patch vendor advisory
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html mailing list
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html vendor advisory
http://osvdb.org/85197 vdb entry
http://www.securitytracker.com/id?1027479 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html vendor advisory
http://www.debian.org/security/2012/dsa-2544 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2012-3494?
CVE-2012-3494 has been scored as a low severity vulnerability.
How to fix CVE-2012-3494?
To fix CVE-2012-3494, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-3494 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2012-3494 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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