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Insufficient Verification of Data Authenticity Affecting matrix-synapse package, versions [,1.5.0rc2)

0.0
high

Snyk CVSS

    Attack Complexity High
    Scope Changed
    Confidentiality High
    Integrity High

    Threat Intelligence

    EPSS 0.24% (62nd percentile)
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NVD
9.8 critical

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  • Snyk ID SNYK-PYTHON-MATRIXSYNAPSE-480456
  • published 8 Nov 2019
  • disclosed 8 Nov 2019
  • credit Unknown
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Introduced: 8 Nov 2019

CVE-2019-18835 Open this link in a new tab
CWE-345 Open this link in a new tab

How to fix?

Upgrade matrix-synapse to version 1.5.0rc2 or higher.

Overview

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

Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity as it mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from expected hosts.