Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) Affecting matrix-synapse package, versions <0.24.0+dfsg-1ubuntu0.1~esm1
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-UBUNTU1804-MATRIXSYNAPSE-458625
- published9 May 2019
- disclosed9 May 2019
Introduced: 9 May 2019
CVE-2019-11842 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 matrix-synapse to version 0.24.0+dfsg-1ubuntu0.1~esm1 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:18.04 relevant fixed versions and status.
An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID.