Vulnerability Details : 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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2012-3494
Probability of exploitation activity in the next 30 days: 0.06%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 26 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2012-3494
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST |
CWE ids for CVE-2012-3494
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Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-3494
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http://www.securitytracker.com/id?1027479
Xen set_debugreg() Hypercall Lets Local Guest Operating Systems Cause Denial of Service Conditions on the Host Operating System - SecurityTracker
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http://security.gentoo.org/glsa/glsa-201309-24.xml
Xen: Multiple vulnerabilities (GLSA 201309-24) — Gentoo security
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http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00012.html
[security-announce] SUSE-SU-2012:1162-1: important: Security update for
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http://www.openwall.com/lists/oss-security/2012/09/05/5
oss-security - Xen Security Advisory 12 (CVE-2012-3494) - hypercall set_debugreg vulnerability
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http://wiki.xen.org/wiki/Security_Announcements#XSA-12_hypercall_set_debugreg_vulnerability
Security Announcements (Historical) - Xen
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http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
[security-announce] openSUSE-SU-2012:1572-1: important: XEN: security an
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http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00018.html
[security-announce] openSUSE-SU-2012:1174-1: important: Security Update
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http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
[security-announce] SUSE-SU-2012:1132-1: important: Security update for
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http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
[security-announce] openSUSE-SU-2012:1573-1: important: XEN: security an
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http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
[security-announce] SUSE-SU-2012:1133-1: important: Security update for
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https://bugzilla.redhat.com/show_bug.cgi?id=851139
851139 – (CVE-2012-3494) CVE-2012-3494 kernel: xen: hypercall set_debugreg vulnerability
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http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
[security-announce] openSUSE-SU-2012:1172-1: important: Security Update
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http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00001.html
[security-announce] SUSE-SU-2012:1129-1: important: Security update for
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http://www.debian.org/security/2012/dsa-2544
Debian -- Security Information -- DSA-2544-1 xen
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https://security.gentoo.org/glsa/201604-03
Xen: Multiple vulnerabilities (GLSA 201604-03) — Gentoo security
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https://exchange.xforce.ibmcloud.com/vulnerabilities/78265
Xen set_debugreg denial of service CVE-2012-3494 Vulnerability Report
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http://www.securityfocus.com/bid/55400
Xen 'set_debugreg' CVE-2012-3494 Denial of Service Vulnerability
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http://support.citrix.com/article/CTX134708
Citrix XenServer Multiple Security UpdatesPatch;Vendor Advisory
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http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
[security-announce] SUSE-SU-2012:1135-1: important: Security update for
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http://lists.xen.org/archives/html/xen-announce/2012-09/msg00000.html
Xen project Mailing List
Products affected by CVE-2012-3494
- cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x64:*
- cpe:2.3:a:citrix:xenserver:*:-:*:*:*:*:x86:*
- cpe:2.3:o:xen:xen:4.0.0:-:*:*:*:*:x64:*
- cpe:2.3:o:xen:xen:4.1.0:-:*:*:*:*:x64:*
- cpe:2.3:o:xen:xen:4.0.0:-:*:*:*:*:x86:*
- cpe:2.3:o:xen:xen:4.1.0:-:*:*:*:*:x86:*
- cpe:2.3:o:xen:xen:4.2.0:-:*:*:*:*:x64:*
- cpe:2.3:o:xen:xen:4.2.0:-:*:*:*:*:x86:*