[SECURITY] Fedora 34 Update: matrix-synapse-1.41.1-1.fc34

Matrix is an ambitious new ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference "homeserver" implementation of Matrix from the core development team at matrix.org, written in Python/Twisted. It is intended to showcase the concept of Matrix and let folks see the spec in...

CVE-2021-39164

Matrix is an ecosystem for open federated Instant Messaging and Voice over IP. In versions 1.41.0 and prior, unauthorised users can access the membership list of members, with their display names of a room if they know the ID of the room. The vulnerability is limited to rooms with shared history...

CVE-2021-29471 Denial of service in Matrix Synapse

Synapse is a Matrix reference homeserver written in python pypi package matrix-synapse. Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.33.2 "Push rules" can specify conditions under which they will match, including eventmatch, which matches event...

CVE-2021-21392 Open redirect via transitional IPv6 addresses on dual-stack networks

Synapse is a Matrix reference homeserver written in python pypi package matrix-synapse. Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 requests to user provided domains were not restricted to external IP addresses when transitional IPv6...

CVE-2021-21392

Synapse (matrix-synapse) prior to version 1.28.0 is affected by a vulnerability where requests to user-provided domains could escape external IP restrictions on dual-stack networks due to transitional IPv6 addresses. This may allow outbound requests to internal infrastructure during federation, i...

CVE-2021-21394 Denial of service (via resource exhaustion) due to improper input validation on third-party identifier endpoints

Synapse is a Matrix reference homeserver written in python pypi package matrix-synapse. Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.28.0 Synapse is missing input validation of some parameters on the endpoints used to confirm third-party...

Code injection

Synapse is a Matrix reference homeserver written in python pypi package matrix-synapse. Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, a malicious homeserver could redirect requests to their .well-known file to a large file. This can lead t...