Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 999 | all | matrix-synapse | < 0.28.1+dfsg-1 | matrix-synapse_0.28.1+dfsg-1_all.deb |
Debian | 13 | all | matrix-synapse | < 0.28.1+dfsg-1 | matrix-synapse_0.28.1+dfsg-1_all.deb |