CVE-2020-35963

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    CVE-2020-35963

    Published: 3 Jan 2021Last Modified: 11 Apr 2026

    Summary:

    Details: flb_gzip_compress in flb_gzip.c in Fluent Bit before 1.6.4 has an out-of-bounds write because it does not use the correct calculation of the maximum gzip data-size expansion.

    References: https://fluentbit.io/announcements/v1.6.4/, https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27261, https://github.com/fluent/fluent-bit/commit/cadff53c093210404aed01c4cf586adb8caa07af

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -626b22f1dff69c155a2d84df7625c58b78881eeb

    Affected versions

    0.13-dev-0.10
    0.13-dev-0.11
    0.13-dev-0.12
    0.13-dev-0.13
    0.13-dev-0.14
    0.13-dev-0.15
    0.13-dev-0.16
    0.13-dev-0.17
    0.13-dev-0.18
    0.13-dev-0.4
    0.13-dev-0.9

    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
    CVE-2020-35963 | CVE-DB