Improper Verification of Cryptographic Signature in matrix-synapse
High severity
GitHub Reviewed
Published
May 24, 2022
to the GitHub Advisory Database
•
Updated Sep 24, 2024
Description
Published by the National Vulnerability Database
Nov 8, 2019
Published to the GitHub Advisory Database
May 24, 2022
Reviewed
Sep 19, 2022
Last updated
Sep 24, 2024
Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over
/send_join
,/send_leave
, and/invite
may not be correctly signed, or may not come from the expected servers.References