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    CVE-2021-46878

    An issue was discovered in Treasure Data Fluent Bit 1.7.1, erroneous parsing in flb_pack_msgpack_to_json_format leads to type confusion bug that interprets whatever is on the stack as msgpack maps and arrays, leading to use-after-free. This can be used by an attacker to craft a specially craft file and trick the victim opening it using the affect software, triggering use-after-free and execute arbitrary code on the target system.

    Published:Apr 11, 2023
    Last Modified:Feb 11, 2025
    EPS:Apr 11, 2023
    EPSS Score:0.00032
    CVSS Score:7.8

    Affected Products

    Vendor
    Treasuredata
    Product
    Fluent Bit

    Exploits

    https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27742https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27742

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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