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    CVE-2020-27671

    An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled.

    Published:Oct 20, 2020
    Last Modified:Nov 21, 2024
    EPS:Oct 22, 2020
    EPSS Score:0.00071
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Xen
    Product
    Xen

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
    http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
    http://www.openwall.com/lists/oss-security/2021/01/19/8
    http://xenbits.xen.org/xsa/advisory-346.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
    https://security.gentoo.org/glsa/202011-06
    https://www.debian.org/security/2020/dsa-4804
    https://xenbits.xen.org/xsa/advisory-346.html
    http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
    http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
    http://www.openwall.com/lists/oss-security/2021/01/19/8
    http://xenbits.xen.org/xsa/advisory-346.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
    https://security.gentoo.org/glsa/202011-06
    https://www.debian.org/security/2020/dsa-4804
    https://xenbits.xen.org/xsa/advisory-346.html

    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