Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) Affecting matrix-synapse package, versions <0.99.2-5


Severity

Recommended
0.0
high
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.17% (55th percentile)

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  • Snyk ID SNYK-DEBIANUNSTABLE-MATRIXSYNAPSE-345922
  • published 9 May 2019
  • disclosed 9 May 2019

How to fix?

Upgrade Debian:unstable matrix-synapse to version 0.99.2-5 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 Debian. See How to fix? for Debian:unstable 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.