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    CVE-2018-12029

    A race condition in the nginx module in Phusion Passenger 3.x through 5.x before 5.3.2 allows local escalation of privileges when a non-standard passenger_instance_registry_dir with insufficiently strict permissions is configured. Replacing a file with a symlink after the file was created, but before it was chowned, leads to the target of the link being chowned via the path. Targeting sensitive files such as root's crontab file allows privilege escalation.

    Published:Jun 5, 2018
    Last Modified:Nov 21, 2024
    EPS:Jun 17, 2018
    EPSS Score:0.00099
    CVSS Score:7

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Phusion
    Product
    Passenger

    Exploits

    No exploit reference

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    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