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    CVE-2018-6556

    lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.

    Published:Aug 10, 2018
    Last Modified:Nov 21, 2024
    EPS:Aug 10, 2018
    EPSS Score:0.00043
    CVSS Score:3.3

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Linuxcontainers
    Product
    Lxc
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Suse
    Product
    Caas Platform
    Vendor
    Suse
    Product
    Openstack Cloud
    Vendor
    Suse
    Product
    Suse Linux Enterprise Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
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    References

    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00074.html
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00076.html
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00091.html
    http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00073.html
    https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591
    https://bugzilla.suse.com/show_bug.cgi?id=988348
    https://security.gentoo.org/glsa/201808-02
    https://usn.ubuntu.com/usn/usn-3730-1
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00074.html
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00076.html
    http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00091.html
    http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00073.html
    https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591
    https://bugzilla.suse.com/show_bug.cgi?id=988348
    https://security.gentoo.org/glsa/201808-02
    https://usn.ubuntu.com/usn/usn-3730-1

    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