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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:Sep 5, 2012
    Last Modified:Apr 11, 2025
    EPS:Nov 23, 2012
    EPSS Score:0.00112
    CVSS Score:2.1

    Affected Products

    Vendor
    Citrix
    Product
    Xenserver
    Vendor
    Xen
    Product
    Xen

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2024-5661 (CVSS 6) — An issue has been identified in both XenServer 8 and Citrix Hypervisor 8.2 CU1 LTSR which may allow a maliciou…
    CVE-2012-4606 (CVSS 7.8) — Citrix XenServer 4.1, 6.0, 5.6 SP2, 5.6 Feature Pack 1, 5.6 Common Criteria, 5.6, 5.5, 5.0, and 5.0 Update 3 c…
    CVE-2014-3798 (CVSS 6.5) — The Windows Guest Tools in Citrix XenServer 6.2 SP1 and earlier allows remote attackers to cause a denial of s…
    CVE-2018-19962 (CVSS 7.8) — An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain h…
    CVE-2018-19961 (CVSS 7.8) — An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain h…
    CVE-2018-19965 (CVSS 5.6) — An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (…
    CVE-2018-14007 (CVSS 9.8) — Citrix XenServer 7.1 and newer allows Directory Traversal.…
    CVE-2018-11053 (CVSS 6.5) — Dell EMC iDRAC Service Module for all supported Linux and XenServer versions v3.0.1, v3.0.2, v3.1.0, v3.2.0, w…
    CVE-2018-3665 (CVSS 5.6) — System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors ma…
    CVE-2018-8897 (CVSS 7.8) — A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manua…

    References

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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High