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gunicorn@21.2.0 vulnerabilities

WSGI HTTP Server for UNIX

  • latest version

    23.0.0

  • latest non vulnerable version

    23.0.0

  • first published

    15 years ago

  • latest version published

    8 months ago

  • licenses detected

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    Direct Vulnerabilities

    Known vulnerabilities in the gunicorn package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
    • H
    HTTP Request Smuggling

    gunicorn is a Python WSGI HTTP Server for UNIX

    Affected versions of this package are vulnerable to HTTP Request Smuggling due to improper validation of the Transfer-Encoding header. An attacker can manipulate session data, poison caches, or compromise data integrity by exploiting the fallback to Content-Length when Transfer-Encoding is not correctly handled.

    How to fix HTTP Request Smuggling?

    Upgrade gunicorn to version 23.0.0 or higher.

    [,23.0.0)
    • H
    HTTP Request Smuggling

    gunicorn is a Python WSGI HTTP Server for UNIX

    Affected versions of this package are vulnerable to HTTP Request Smuggling due to the improper validation of Transfer-Encoding headers. An attacker can bypass security restrictions and access restricted endpoints by crafting requests with conflicting Transfer-Encoding headers.

    Notes:

    1. This is only exploitable if users have a network path which does not filter out invalid requests;

    2. Users are advised to block access to restricted endpoints via a firewall or other mechanism until a fix can be developed.

    3. This issue arises from the application's incorrectly processing of requests with multiple, conflicting Transfer-Encoding headers, treating them as chunked regardless of the final encoding specified.

    How to fix HTTP Request Smuggling?

    Upgrade gunicorn to version 22.0.0 or higher.

    [,22.0.0)
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