Vulnerabilities > CVE-2019-11842 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) vulnerability in Matrix Sydent and Synapse

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

NONE

Availability impact

NONE

network

low complexity

matrix

CWE-338

NVD

Published: 2019-05-09

Updated: 2019-05-10

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Matrix Matrix Sydent - Matrix Sydent 1.0.0 Matrix Sydent 1.0.1 Matrix Sydent 1.0.2 Matrix Synapse - Matrix Synapse 0.0.1 Matrix Synapse 0.1.0 Matrix Synapse 0.1.1 Matrix Synapse 0.1.2 Matrix Synapse 0.2.0 Matrix Synapse 0.2.1 Matrix Synapse 0.2.2 Matrix Synapse 0.2.3 Matrix Synapse 0.3.0 Matrix Synapse 0.3.1 Matrix Synapse 0.3.2 Matrix Synapse 0.3.3 Matrix Synapse 0.3.4 Matrix Synapse 0.4.0 Matrix Synapse 0.4.1 Matrix Synapse 0.4.2 Matrix Synapse 0.5.0 Matrix Synapse 0.5.1 Matrix Synapse 0.5.2 Matrix Synapse 0.5.3 Matrix Synapse 0.5.4 Matrix Synapse 0.6.0 Matrix Synapse 0.6.1 Matrix Synapse 0.7.0 Matrix Synapse 0.7.1 Matrix Synapse 0.8.0 Matrix Synapse 0.8.1 Matrix Synapse 0.9.0 Matrix Synapse 0.9.1 Matrix Synapse 0.9.2 Matrix Synapse 0.9.3 Matrix Synapse 0.9.4 Matrix Synapse 0.10.0 Matrix Synapse 0.10.1 Matrix Synapse 0.11.0 Matrix Synapse 0.11.1 Matrix Synapse 0.12.0 Matrix Synapse 0.12.1 Matrix Synapse 0.13.0 Matrix Synapse 0.13.1 Matrix Synapse 0.13.2 Matrix Synapse 0.13.3 Matrix Synapse 0.14.0 Matrix Synapse 0.15.0 Matrix Synapse 0.16.0 Matrix Synapse 0.16.1 Matrix Synapse 0.17.0 Matrix Synapse 0.17.1 Matrix Synapse 0.17.2 Matrix Synapse 0.17.3 Matrix Synapse 0.18.0 Matrix Synapse 0.18.1 Matrix Synapse 0.18.2 Matrix Synapse 0.18.3 Matrix Synapse 0.18.4 Matrix Synapse 0.18.5 Matrix Synapse 0.18.6 Matrix Synapse 0.18.7 Matrix Synapse 0.19.0 Matrix Synapse 0.19.1 Matrix Synapse 0.19.2 Matrix Synapse 0.19.3 Matrix Synapse 0.20.0 Matrix Synapse 0.21.0 Matrix Synapse 0.21.1 Matrix Synapse 0.22.0 Matrix Synapse 0.22.1 Matrix Synapse 0.23.0 Matrix Synapse 0.23.1 Matrix Synapse 0.24.0 Matrix Synapse 0.24.1 Matrix Synapse 0.25.0 Matrix Synapse 0.25.1 Matrix Synapse 0.26.0 Matrix Synapse 0.26.1 Matrix Synapse 0.27.0 Matrix Synapse 0.27.1 Matrix Synapse 0.27.2 Matrix Synapse 0.27.3 Matrix Synapse 0.27.4 Matrix Synapse 0.28.0 Matrix Synapse 0.28.1 Matrix Synapse 0.29.0 Matrix Synapse 0.29.1 Matrix Synapse 0.30.0 Matrix Synapse 0.31.0 Matrix Synapse 0.31.1 Matrix Synapse 0.31.2 Matrix Synapse 0.32.0 Matrix Synapse 0.32.1 Matrix Synapse 0.32.2 Matrix Synapse 0.33.0 Matrix Synapse 0.33.1 Matrix Synapse 0.33.2 Matrix Synapse 0.33.2.1 Matrix Synapse 0.33.3 Matrix Synapse 0.33.3.1 Matrix Synapse 0.33.4 Matrix Synapse 0.33.5 Matrix Synapse 0.33.5.1 Matrix Synapse 0.33.6 Matrix Synapse 0.33.7 Matrix Synapse 0.33.8 Matrix Synapse 0.33.9 Matrix Synapse 0.34.0 Matrix Synapse 0.34.0.1 Matrix Synapse 0.34.1 Matrix Synapse 0.34.1.1 Matrix Synapse 0.88.5.1 Matrix Synapse 0.99.0 Matrix Synapse 0.99.1 Matrix Synapse 0.99.1.1 Matrix Synapse 0.99.2 Matrix Synapse 0.99.3	206

Common Weakness Enumeration (CWE)

CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

References

https://matrix.org/blog/2019/05/03/security-updates-sydent-1-0-3-synapse-0-99-3-1-and-riot-android-0-9-0-0-8-99-0-8-28-a/