CVE-2019-12209

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    CVE-2019-12209

    Published: 4 Jun 2019Last Modified: 8 Jul 2026

    Summary:

    Details: Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink target will be logged, possibly revealing sensitive information.

    References: http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html, http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5FOR4ADC356JPCHAJI5UXZORLC3VNBPS/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCGU6UQLI3ZTW3UYCTMQW7VDL5M4LCWR/, https://developers.yubico.com/pam-u2f/Release_Notes.html, https://github.com/Yubico/pam-u2f/commit/7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3, http://www.openwall.com/lists/oss-security/2019/06/05/1

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -7db3386fcdb454e33a3ea30dcfb8e8960d4c3aa3

    Affected versions

    pam_u2f-1.0.7
    pam_u2f-1.0.6
    pam_u2f-1.0.5
    pam_u2f-1.0.4
    pam_u2f-1.0.3
    pam_u2f-1.0.2
    pam_u2f-1.0.1
    pam_u2f-1.0.0

    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