Vulnerability Monitor

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CVE-2012-3494

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.

Published

2012-11-23T20:55:03.057

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 2.1 (LOW)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	citrix	xenserver	≤ 6.0.2	Yes
Application	citrix	xenserver	≤ 6.0.2	Yes
Operating System	xen	xen	4.0.0	Yes
Operating System	xen	xen	4.0.0	Yes
Operating System	xen	xen	4.1.0	Yes
Operating System	xen	xen	4.1.0	Yes
Operating System	xen	xen	4.2.0	Yes
Operating System	xen	xen	4.2.0	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html ([email protected])
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html ([email protected])
http://osvdb.org/85197 ([email protected])
http://secunia.com/advisories/50472 Vendor Advisory ([email protected])
http://secunia.com/advisories/50530 Vendor Advisory ([email protected])
http://secunia.com/advisories/51413 ([email protected])
http://secunia.com/advisories/55082 ([email protected])
http://security.gentoo.org/glsa/glsa-201309-24.xml ([email protected])
http://support.citrix.com/article/CTX134708 Patch, Vendor Advisory ([email protected])
http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability ([email protected])
http://www.debian.org/security/2012/dsa-2544 ([email protected])
http://www.openwall.com/lists/oss-security/2012/09/05/5 ([email protected])
http://www.securityfocus.com/bid/55400 ([email protected])
http://www.securitytracker.com/id?1027479 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=851139 ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/78265 ([email protected])
https://security.gentoo.org/glsa/201604-03 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html (af854a3a-2127-422b-91ae-364da2661108)
http://osvdb.org/85197 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/50472 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/50530 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/51413 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/55082 (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-201309-24.xml (af854a3a-2127-422b-91ae-364da2661108)
http://support.citrix.com/article/CTX134708 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2012/dsa-2544 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2012/09/05/5 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/55400 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1027479 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=851139 (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/78265 (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201604-03 (af854a3a-2127-422b-91ae-364da2661108)