PYSEC-2022-202

    Dashboard / Vulnerabilities / PYSEC-2022-202

    PYSEC-2022-202

    Published: 24 May 2022Last Modified: 8 Nov 2023

    Summary:

    Details: PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library requires that the application chooses what algorithms are supported. The application can specify `jwt.algorithms.get_default_algorithms()` to get support for all algorithms, or specify a single algorithm. The issue is not that big as `algorithms=jwt.algorithms.get_default_algorithms()` has to be used. Users should upgrade to v2.4.0 to receive a patch for this issue. As a workaround, always be explicit with the algorithms that are accepted and expected when decoding.

    References: https://github.com/jpadilla/pyjwt/security/advisories/GHSA-ffqj-6fqr-9h24, https://github.com/jpadilla/pyjwt/commit/9c528670c455b8d948aff95ed50e22940d1ad3fc, https://github.com/jpadilla/pyjwt/releases/tag/2.4.0, https://lists.fedoraproject.org/archives/list/[email protected]/message/6HIYEYZRQEP6QTHT3EHH3RGFYJIHIMAO/, https://lists.fedoraproject.org/archives/list/[email protected]/message/5PK7IQCBVNLYJEFTPHBBPFP72H4WUFNX/

    Affected packages

    Package

    Name: pyjwt

    Purl: pkg:pypi/pyjwt

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -9c528670c455b8d948aff95ed50e22940d1ad3fc

    Affected versions

    1.5.0
    1.5.1
    1.5.2
    1.5.3

    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
    PYSEC-2022-202 | CVE-DB