CVE-2013-4368

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    CVE-2013-4368

    Published: 17 Oct 2013Last Modified: 10 Apr 2026

    Summary:

    Details: The outs instruction emulation in Xen 3.1.x, 4.2.x, 4.3.x, and earlier, when using FS: or GS: segment override, uses an uninitialized variable as a segment base, which allows local 64-bit PV guests to obtain sensitive information (hypervisor stack content) via unspecified vectors related to stale data in a segment register.

    References: http://rhn.redhat.com/errata/RHSA-2013-1449.html, http://security.gentoo.org/glsa/glsa-201407-03.xml, http://www.debian.org/security/2014/dsa-3006, http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00015.html, http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html, http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00000.html, http://lists.opensuse.org/opensuse-updates/2013-11/msg00009.html, http://www.openwall.com/lists/oss-security/2013/10/10/10, https://exchange.xforce.ibmcloud.com/vulnerabilities/87799

    Affected packages

    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
    CVE-2013-4368 | CVE-DB