GHSA-23CM-X6J7-6HQ3 matrix-js-sdk can be tricked into disclosing E2EE room keys to a participating homeserver

Impact A logic error in the room key sharing functionality of matrix-js-sdk before 12.4.1 allows a malicious Matrix homeserver† participating in an encrypted room to steal room encryption keys from affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-en...

matrix-js-sdk can be tricked into disclosing E2EE room keys to a participating homeserver

Impact A logic error in the room key sharing functionality of matrix-js-sdk before 12.4.1 allows a malicious Matrix homeserver† participating in an encrypted room to steal room encryption keys from affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-en...

CVE-2021-40824

A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 aka Matrix SDK for Android before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were...

CVE-2021-40823

A logic error in the room key sharing functionality of matrix-js-sdk aka Matrix Javascript SDK before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were originally sent by affected Matrix clients...

CVE-2021-40824

A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 aka Matrix SDK for Android before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were...

Code injection

A logic error in the room key sharing functionality of matrix-js-sdk aka Matrix Javascript SDK before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were originally sent by affected Matrix clients...

Code injection

A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 aka Matrix SDK for Android before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were...

CVE-2021-40823

A logic error in the room key sharing functionality of matrix-js-sdk aka Matrix Javascript SDK before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were originally sent by affected Matrix clients...

UBUNTU-CVE-2021-40823

A logic error in the room key sharing functionality of matrix-js-sdk aka Matrix Javascript SDK before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were originally sent by affected Matrix clients...

CVE-2021-40824

A logic error in the room key sharing functionality of Element Android before 1.2.2 and matrix-android-sdk2 aka Matrix SDK for Android before 1.2.2 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were...

CVE-2021-40824

The CVE-2021-40824 issue affects Element Android prior to 1.2.2 and matrix-android-sdk2 (Matrix SDK for Android). A logic error in the room key sharing functionality allows a malicious Matrix homeserver in an encrypted room to steal room encryption keys via crafted Matrix protocol messages, enabl...

CVE-2021-40823

A logic error in the room key sharing functionality of matrix-js-sdk aka Matrix Javascript SDK before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were originally sent by affected Matrix clients...

CVE-2021-40823

A logic error in the room key sharing functionality of matrix-js-sdk aka Matrix Javascript SDK before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys via crafted Matrix protocol messages that were originally sent by affected Matrix clients...

[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...

GHSA-JJ53-8FMW-F2W2 Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.

Impact Unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where: - the vulnerable homeserver is in the room; and - untrusted users are permitted to create groups communities. By defaul...

Adding a private/unlisted room to a community exposes room metadata in an unauthorised manner.

Impact Unauthorised users can access the name, avatar, topic and number of members of a room if they know the ID of the room. This vulnerability is limited to homeservers where: - the vulnerable homeserver is in the room; and - untrusted users are permitted to create groups communities. By defaul...

DEBIAN-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-2021-39164

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-2021-39164 Improper authorisation of /members discloses room membership to non-members

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-2021-39164

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...