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    CVE-2019-11503

    snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."

    Published:Apr 24, 2019
    Last Modified:Nov 21, 2024
    EPS:Apr 24, 2019
    EPSS Score:0.00475
    CVSS Score:7.5

    Affected Products

    Vendor
    Canonical
    Product
    Snapd

    Exploits

    https://www.openwall.com/lists/oss-security/2019/04/18/4https://www.openwall.com/lists/oss-security/2019/04/18/4

    Related CVEs

    CVE-2024-29069 (CVSS 4.8) — In snapd versions prior to 2.62, snapd failed to properly check the destination of symbolic links when extract…
    CVE-2024-29068 (CVSS 5.8) — In snapd versions prior to 2.62, snapd failed to properly check the file type when extracting a snap. The snap…
    CVE-2024-1724 (CVSS 6.3) — In snapd versions prior to 2.62, when using AppArmor for enforcement of sandbox permissions, snapd failed to …
    CVE-2020-27352 (CVSS 9.3) — When generating the systemd service units for the docker snap (and other similar snaps), snapd does not specif…
    CVE-2024-5138 (CVSS 8.1) — The snapctl component within snapd allows a confined snap to interact with the snapd daemon to take certain pr…
    CVE-2022-3328 (CVSS 7.8) — Race condition in snap-confine's must_mkdir_and_open_with_perms()…
    CVE-2023-1523 (CVSS 10) — Using the TIOCLINUX ioctl request, a malicious snap could inject contents into the input of the controlling te…
    CVE-2021-4120 (CVSS 8.2) — snapd 2.54.2 fails to perform sufficient validation of snap content interface and layout paths, resulting in t…
    CVE-2021-44730 (CVSS 7.8) — snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardl…
    CVE-2021-3155 (CVSS 3.8) — snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only per…

    References

    http://www.openwall.com/lists/oss-security/2019/04/25/7
    https://github.com/snapcore/snapd/pull/6642
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/
    https://www.openwall.com/lists/oss-security/2019/04/18/4
    http://www.openwall.com/lists/oss-security/2019/04/25/7
    https://github.com/snapcore/snapd/pull/6642
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/
    https://www.openwall.com/lists/oss-security/2019/04/18/4

    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