PT-2019-12525
CVE-2019-11842
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Published
2019-05-09
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Updated
2026-07-09
Description by
CVSS 4.0
8.7
HighMetricsAV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Name of the Vulnerable Software and Affected Versions
Matrix Sydent versions prior to 1.0.3
Synapse versions prior to 0.99.3.1
Description
An issue was discovered that makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID due to mishandled random number generation.
Recommendations
For Matrix Sydent versions prior to 1.0.3, update to version 1.0.3 or later.
For Synapse versions prior to 0.99.3.1, update to version 0.99.3.1 or later.
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