CVE-2023-29529 (GCVE-0-2023-29529)

Vulnerability from cvelistv5 – Published: 2023-04-14 18:21 – Updated: 2025-02-06 18:45
VLAI?
Summary
matrix-js-sdk is the Matrix Client-Server SDK for JavaScript and TypeScript. An attacker present in a room where an MSC3401 group call is taking place can eavesdrop on the video and audio of participants using matrix-js-sdk, without their knowledge. To affected matrix-js-sdk users, the attacker will not appear to be participating in the call. This attack is possible because matrix-js-sdk's group call implementation accepts incoming direct calls from other users, even if they have not yet declared intent to participate in the group call, as a means of resolving a race condition in call setup. Affected versions do not restrict access to the user's outbound media in this case. Legacy 1:1 calls are unaffected. This is fixed in matrix-js-sdk 24.1.0. As a workaround, users may hold group calls in private rooms where only the exact users who are expected to participate in the call are present.
Severity ?
5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version
matrix-org matrix-js-sdk Affected: < 24.1.0
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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