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Insecure Defaults Affecting matrix-synapse package, versions [,1.25.0)

0.0
low

Snyk CVSS

    Attack Complexity High
    User Interaction Required

    Threat Intelligence

    EPSS 0.09% (39th percentile)
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NVD
6.1 medium

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  • Snyk ID SNYK-PYTHON-MATRIXSYNAPSE-1080613
  • published 28 Feb 2021
  • disclosed 28 Feb 2021
  • credit Unknown
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Introduced: 28 Feb 2021

CVE-2021-21273 Open this link in a new tab
CWE-453 Open this link in a new tab

How to fix?

Upgrade matrix-synapse to version 1.25.0 or higher.

Overview

matrix-synapse is an ecosystem for open federated Instant Messaging and VoIP.

Affected versions of this package are vulnerable to Insecure Defaults. Requests to user provided domains are not restricted to external IP addresses when calculating the key validity for third-party invite events and sending push notifications. This could cause Synapse to make requests to internal infrastructure. The type of request was not controlled by the user, although limited modification of request bodies was possible.