Improper Input Validation Affecting matrix-synapse package, versions <0.28.1+dfsg-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU2004-MATRIXSYNAPSE-1195050
- published6 Apr 2021
- disclosed2 May 2018
Introduced: 2 May 2018
CVE-2018-10657 (opens in a new tab)How to fix?
Upgrade Ubuntu:20.04 matrix-synapse to version 0.28.1+dfsg-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream matrix-synapse package and not the matrix-synapse package as distributed by Ubuntu.
See How to fix? for Ubuntu:20.04 relevant fixed versions and status.
Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018.