matrix-js-sdk@5.3.1-rc.4 vulnerabilities

matrix-js-sdk is a Matrix Client-Server SDK for Javascript

Affected versions of this package are vulnerable to Uncontrolled Recursion via the getRoomUpgradeHistory function. An attacker can cause the application to hang by crafting a room or room structure with cyclical predecessors.

Upgrade matrix-js-sdk to version 34.3.1 or higher.

matrix-js-sdk is a Matrix Client-Server SDK for Javascript

Affected versions of this package are vulnerable to Missing Authorization which can lead to invisible eavesdropping in group calls, on the video and audio of participants without their knowledge. The attacker will not appear to be participating in the call.

Notes: Legacy 1:1 calls are unaffected.

Upgrade matrix-js-sdk to version 24.1.0 or higher.

matrix-js-sdk is a Matrix Client-Server SDK for Javascript

Affected versions of this package are vulnerable to Prototype Pollution such that events sent with special strings in key places can temporarily disrupt or impede the matrix-js-sdk from functioning properly, potentially impacting the consumer's ability to process data safely.

Note: The matrix-js-sdk can appear to be operating normally but be excluding or corrupting runtime data presented to the consumer.

Upgrade matrix-js-sdk to version 24.0.0 or higher.

matrix-js-sdk is a Matrix Client-Server SDK for Javascript

Affected versions of this package are vulnerable to Key Exchange without Entity Authentication. An attacker cooperating with a malicious homeserver could interfere with the verification flow between two users, injecting its own cross-signing user identity in place of one of the users’ identities. This would lead to the other device trusting/verifying the user identity under the control of the homeserver instead of the intended one.

Upgrade matrix-js-sdk to version 19.7.0 or higher.

matrix-js-sdk is a Matrix Client-Server SDK for Javascript

Affected versions of this package are vulnerable to Authentication Bypass. An attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without any indication such as a grey shield. Additionally, a sophisticated attacker cooperating with a malicious homeserver could employ this vulnerability to perform a targeted attack in order to send fake to-device messages appearing to originate from another user. This can allow, for example, to inject the key backup secret during a self-verification, to make a targeted device start using a malicious key backup spoofed by the homeserver.

Upgrade matrix-js-sdk to version 19.7.0 or higher.

matrix-js-sdk is a Matrix Client-Server SDK for Javascript

Affected versions of this package are vulnerable to Key Exchange without Entity Authentication. An attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-js-sdk implementing a too permissive key forwarding strategy on the receiving end.

Upgrade matrix-js-sdk to version 19.7.0 or higher.

matrix-js-sdk is a Matrix Client-Server SDK for Javascript

Affected versions of this package are vulnerable to Man-in-the-Middle (MitM). A logic error in the room key sharing functionality 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 participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.

Upgrade matrix-js-sdk to version 12.4.1 or higher.