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CVE-2023-25577

CVE-2023-25577 · Werkzeug may allow high resource usage when parsing multipart form data with many fields

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Werkzeug is a comprehensive WSGI web application library. Prior to version 2.2.3, Werkzeug's multipart form data parser will parse an unlimited number of parts, including file parts. Parts can be a small amount of bytes, but each requires CPU time to parse and may use more memory as Python data. If a request can be made to an endpoint that accesses `request.data`, `request.form`, `request.files`, or `request.get_data(parse_form_data=False)`, it can cause unexpectedly high resource usage. This allows an attacker to cause a denial of service by sending crafted multipart data to an endpoint that will parse it. The amount of CPU time required can block worker processes from handling legitimate requests. The amount of RAM required can trigger an out of memory kill of the process. Unlimited file parts can use up memory and file handles. If many concurrent requests are sent continuously, this can exhaust or kill all available workers. Version 2.2.3 contains a patch for this issue.

CVSS 7.5 · High · EPSS 1.4% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • werkzeug

    Versions
    • < 2.2.3: Affected

    No fix published

  • python-werkzeug Debian:12

    Affected ranges
    • ECOSYSTEM: < 2.2.2-3

    Update to 2.2.2-3

  • python-werkzeug Debian:13

    Affected ranges
    • ECOSYSTEM: < 2.2.2-3

    Update to 2.2.2-3

  • python-werkzeug Debian:14

    Affected ranges
    • ECOSYSTEM: < 2.2.2-3

    Update to 2.2.2-3

  • werkzeug PyPI

    Versions
    • 0.1
    • 0.10
    • 0.10.1
    • 0.10.2
    • 0.10.3
    • 0.10.4
    • 0.11
    • 0.11.1
    • 0.11.10
    • 0.11.11
    • 0.11.12
    • 0.11.13
    • 0.11.14
    • 0.11.15
    • 0.11.2
    • 0.11.3
    • 0.11.4
    • 0.11.5
    • 0.11.6
    • 0.11.7
    • 0.11.8
    • 0.11.9
    • 0.12
    • 0.12.1
    • 0.12.2
    • 0.13
    • 0.14
    • 0.14.1
    • 0.15.0
    • 0.15.1
    • 0.15.2
    • 0.15.3
    • 0.15.4
    • 0.15.5
    • 0.15.6
    • 0.16.0
    • 0.16.1
    • 0.2
    • 0.3
    • 0.3.1
    • 0.4
    • 0.4.1
    • 0.5
    • 0.5.1
    • 0.6
    • 0.6.1
    • 0.6.2
    • 0.7
    • 0.7.1
    • 0.7.2
    • 0.8
    • 0.8.1
    • 0.8.2
    • 0.8.3
    • 0.9
    • 0.9.1
    • 0.9.2
    • 0.9.3
    • 0.9.4
    • 0.9.5
    • 0.9.6
    • 1.0.0
    • 1.0.0rc1
    • 1.0.1
    • 2.0.0
    • 2.0.0rc1
    • 2.0.0rc2
    • 2.0.0rc3
    • 2.0.0rc4
    • 2.0.0rc5
    • 2.0.1
    • 2.0.2
    • 2.0.3
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.2.0
    • 2.2.0a1
    • 2.2.1
    • 2.2.2
    Affected ranges
    • ECOSYSTEM: < 2.2.3

    Update to 2.2.3

  • werkzeug PyPI

    Versions
    • 0.1
    • 0.10
    • 0.10.1
    • 0.10.2
    • 0.10.3
    • 0.10.4
    • 0.11
    • 0.11.1
    • 0.11.10
    • 0.11.11
    • 0.11.12
    • 0.11.13
    • 0.11.14
    • 0.11.15
    • 0.11.2
    • 0.11.3
    • 0.11.4
    • 0.11.5
    • 0.11.6
    • 0.11.7
    • 0.11.8
    • 0.11.9
    • 0.12
    • 0.12.1
    • 0.12.2
    • 0.13
    • 0.14
    • 0.14.1
    • 0.15.0
    • 0.15.1
    • 0.15.2
    • 0.15.3
    • 0.15.4
    • 0.15.5
    • 0.15.6
    • 0.16.0
    • 0.16.1
    • 0.2
    • 0.3
    • 0.3.1
    • 0.4
    • 0.4.1
    • 0.5
    • 0.5.1
    • 0.6
    • 0.6.1
    • 0.6.2
    • 0.7
    • 0.7.1
    • 0.7.2
    • 0.8
    • 0.8.1
    • 0.8.2
    • 0.8.3
    • 0.9
    • 0.9.1
    • 0.9.2
    • 0.9.3
    • 0.9.4
    • 0.9.5
    • 0.9.6
    • 1.0.0
    • 1.0.0rc1
    • 1.0.1
    • 2.0.0
    • 2.0.0rc1
    • 2.0.0rc2
    • 2.0.0rc3
    • 2.0.0rc4
    • 2.0.0rc5
    • 2.0.1
    • 2.0.2
    • 2.0.3
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.2.0
    • 2.2.0a1
    • 2.2.1
    • 2.2.2
    Affected ranges
    • GIT: < 517cac5a804e8c4dc4ed038bb20dacd038e7a9f1
    • ECOSYSTEM: < 2.2.3

    Update to 2.2.3

  • python-werkzeug Ubuntu:Pro:16.04:LTS

    Versions
    • 0.10.4+dfsg1-1ubuntu1
    • 0.10.4+dfsg1-1ubuntu1.1
    • 0.10.4+dfsg1-1ubuntu1.2
    Affected ranges
    • ECOSYSTEM: < 0.10.4+dfsg1-1ubuntu1.2+esm1

    Update to 0.10.4+dfsg1-1ubuntu1.2+esm1

  • python-werkzeug Ubuntu:18.04:LTS

    Versions
    • 0.12.2+dfsg1-2
    • 0.13+dfsg1-1
    • 0.14.1+dfsg1-1
    • 0.14.1+dfsg1-1ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 0.14.1+dfsg1-1ubuntu0.2

    Update to 0.14.1+dfsg1-1ubuntu0.2

  • python-werkzeug Ubuntu:20.04:LTS

    Versions
    • 0.14.1+dfsg1-4
    • 0.15.6+dfsg1-1
    • 0.16.0+dfsg1-1
    • 0.16.1+dfsg1-1ubuntu1
    • 0.16.1+dfsg1-2
    Affected ranges
    • ECOSYSTEM: < 0.16.1+dfsg1-2ubuntu0.1

    Update to 0.16.1+dfsg1-2ubuntu0.1

  • python-werkzeug Ubuntu:22.04:LTS

    Versions
    • 1.0.1+dfsg1-2
    • 2.0.2+dfsg1-1
    Affected ranges
    • ECOSYSTEM: < 2.0.2+dfsg1-1ubuntu0.22.04.1

    Update to 2.0.2+dfsg1-1ubuntu0.22.04.1

Original sources

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