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    CVE-2019-15847

    The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same.

    Published:Sep 2, 2019
    Last Modified:Nov 21, 2024
    EPS:Sep 2, 2019
    EPSS Score:0.00494
    CVSS Score:7.5

    Affected Products

    Vendor
    Gnu
    Product
    Gcc
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Software Collections

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-331 Insufficient Entropy

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-59 Session Credential Falsification through Prediction

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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