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    CVE-2017-20002

    The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges.

    Published:Mar 17, 2021
    Last Modified:Nov 21, 2024
    EPS:Mar 17, 2021
    EPSS Score:0.00059
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Debian
    Product
    Shadow

    Exploits

    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957

    Common Weakness Enumeration

    CWE-269 Improper Privilege Management

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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