Insecure Defaults Affecting matrix-synapse package, versions [,1.25.0)
Threat Intelligence
EPSS
0.09% (41st
percentile)
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Test your applications- Snyk ID SNYK-PYTHON-MATRIXSYNAPSE-1080613
- published 28 Feb 2021
- disclosed 28 Feb 2021
- credit Unknown
Introduced: 28 Feb 2021
CVE-2021-21273 Open this link in a new tabHow 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.
References
CVSS Scores
version 3.1