p PatchFirst

CVE-2024-49769

CVE-2024-49769 · Waitress has a denial of service leading to high CPU usage/resource exhaustion

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

Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.

CVSS 7.5 · High · EPSS 1.4% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • waitress

    Versions
    • < 3.0.1: Affected

    No fix published

  • waitress Debian:12

    Versions
    • 2.1.2-2
    Affected ranges
    • ECOSYSTEM: < 2.1.2-2+deb12u1

    Update to 2.1.2-2+deb12u1

  • waitress Debian:13

    Affected ranges
    • ECOSYSTEM: < 3.0.1-1

    Update to 3.0.1-1

  • waitress Debian:14

    Affected ranges
    • ECOSYSTEM: < 3.0.1-1

    Update to 3.0.1-1

  • waitress PyPI

    Versions
    • 0.1
    • 0.2
    • 0.3
    • 0.4
    • 0.5
    • 0.6
    • 0.6.1
    • 0.7
    • 0.8
    • 0.8.1
    • 0.8.10
    • 0.8.11b0
    • 0.8.2
    • 0.8.3
    • 0.8.4
    • 0.8.5
    • 0.8.6
    • 0.8.7
    • 0.8.8
    • 0.8.9
    • 0.9.0
    • 0.9.0b0
    • 0.9.0b1
    • 1.0.0
    • 1.0.1
    • 1.0.2
    • 1.0a1
    • 1.0a2
    • 1.1.0
    • 1.2.0
    • 1.2.0b1
    • 1.2.0b2
    • 1.2.0b3
    • 1.2.1
    • 1.3.0
    • 1.3.0b0
    • 1.3.1
    • 1.4.0
    • 1.4.1
    • 1.4.2
    • 1.4.3
    • 1.4.4
    • 2.0.0
    • 2.0.0b0
    • 2.0.0b1
    • 2.1.0
    • 2.1.0b0
    • 2.1.1
    • 2.1.2
    • 3.0.0
    Affected ranges
    • ECOSYSTEM: < 3.0.1

    Update to 3.0.1

  • waitress PyPI

    Versions
    • 0.1
    • 0.2
    • 0.3
    • 0.4
    • 0.5
    • 0.6
    • 0.6.1
    • 0.7
    • 0.8
    • 0.8.1
    • 0.8.10
    • 0.8.11b0
    • 0.8.2
    • 0.8.3
    • 0.8.4
    • 0.8.5
    • 0.8.6
    • 0.8.7
    • 0.8.8
    • 0.8.9
    • 0.9.0
    • 0.9.0b0
    • 0.9.0b1
    • 1.0.0
    • 1.0.1
    • 1.0.2
    • 1.0a1
    • 1.0a2
    • 1.1.0
    • 1.2.0
    • 1.2.0b1
    • 1.2.0b2
    • 1.2.0b3
    • 1.2.1
    • 1.3.0
    • 1.3.0b0
    • 1.3.1
    • 1.4.0
    • 1.4.1
    • 1.4.2
    • 1.4.3
    • 1.4.4
    • 2.0.0
    • 2.0.0b0
    • 2.0.0b1
    • 2.1.0
    • 2.1.0b0
    • 2.1.1
    • 2.1.2
    • 3.0.0
    Affected ranges
    • GIT: < 1ae4e894c9f76543bee06584001583fc6fa8c95c
    • ECOSYSTEM: < 3.0.1

    Update to 3.0.1

  • waitress Ubuntu:16.04:LTS

    Versions
    • 0.8.9-2ubuntu1
    • 0.8.10-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • waitress Ubuntu:18.04:LTS

    Versions
    • 1.0.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • waitress Ubuntu:20.04:LTS

    Versions
    • 1.2.0~b2-2
    • 1.3.1-4
    • 1.4.1-1
    • 1.4.1-1ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 1.4.1-1ubuntu0.2

    Update to 1.4.1-1ubuntu0.2

  • waitress Ubuntu:22.04:LTS

    Versions
    • 1.4.4-1.1
    • 1.4.4-1.1ubuntu1
    Affected ranges
    • ECOSYSTEM: < 1.4.4-1.1ubuntu1.1

    Update to 1.4.4-1.1ubuntu1.1

  • waitress Ubuntu:Pro:24.04:LTS

    Versions
    • 2.1.2-2
    Affected ranges
    • ECOSYSTEM: < 2.1.2-2ubuntu0.1~esm1

    Update to 2.1.2-2ubuntu0.1~esm1

Original sources

Check your server →