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CVE-2022-39374

CVE-2022-39374 · Synapse Denial of service due to incorrect application of event authorization rules during state resolution

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

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0

CVSS 6.5 · Medium · EPSS 0.9% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • synapse

    Versions
    • >= 1.62.0, < 1.68.0: Affected

    No fix published

  • matrix-synapse PyPI

    Versions
    • 1.62.0
    • 1.63.0
    • 1.63.0rc1
    • 1.63.1
    • 1.64.0
    • 1.64.0rc1
    • 1.64.0rc2
    • 1.65.0
    • 1.65.0rc1
    • 1.65.0rc2
    • 1.66.0
    • 1.66.0rc1
    • 1.66.0rc2
    • 1.67.0
    • 1.67.0rc1
    Affected ranges
    • ECOSYSTEM: ≥ 1.62.0, < 1.68.0rc1

    Update to 1.68.0rc1

  • matrix-synapse PyPI

    Versions
    • 1.62.0
    • 1.63.0
    • 1.63.0rc1
    • 1.63.1
    • 1.64.0
    • 1.64.0rc1
    • 1.64.0rc2
    • 1.65.0
    • 1.65.0rc1
    • 1.65.0rc2
    • 1.66.0
    • 1.66.0rc1
    • 1.66.0rc2
    • 1.67.0
    • 1.67.0rc1
    • 1.68.0rc1
    • 1.68.0rc2
    Affected ranges
    • ECOSYSTEM: ≥ 1.62.0, < 1.68.0

    Update to 1.68.0

  • matrix-synapse Ubuntu:Pro:20.04:LTS

    Versions
    • 1.3.0-1
    • 1.4.0-1
    • 1.5.0-1
    • 1.5.1-1
    • 1.6.0-1
    • 1.6.1-1
    • 1.7.0-2
    • 1.7.1-1
    • 1.7.2-1
    • 1.7.3-1
    • 1.8.0-1
    • 1.9.0-1
    • 1.9.1-1
    • 1.10.0-1
    • 1.10.0-2
    • 1.11.0-1
    Affected ranges
    • ECOSYSTEM: < 1.11.0-1ubuntu0.1~esm2

    Update to 1.11.0-1ubuntu0.1~esm2

  • matrix-synapse Ubuntu:Pro:22.04:LTS

    Versions
    • 1.39.0-1
    • 1.47.0-2
    • 1.47.1-1
    • 1.48.0-1
    • 1.49.0-1
    • 1.49.2-1
    • 1.50.1-1
    • 1.50.2-1
    • 1.51.0-1
    • 1.52.0-1
    • 1.53.0-1
    Affected ranges
    • ECOSYSTEM: < 1.53.0-1ubuntu0.1~esm2

    Update to 1.53.0-1ubuntu0.1~esm2

Original sources

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