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matrix-sydent and matrix-synapse Use Cryptographically Weak PRNG

High severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Jan 28, 2023

Package

pip matrix-sydent (pip)

Affected versions

< 1.0.3

Patched versions

1.0.3
pip matrix-synapse (pip)
< 0.99.3.1
0.99.3.1

Description

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.

References

Published by the National Vulnerability Database May 9, 2019
Published to the GitHub Advisory Database May 24, 2022
Reviewed Jul 27, 2022
Last updated Jan 28, 2023

Severity

High
7.5
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses

CVE ID

CVE-2019-11842

GHSA ID

GHSA-gwf7-vfjf-wf6x

Source code

No known source code

Credits

Checking history
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