CVE-2023-29529

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Summary

CVECVE-2023-29529
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-04-14 19:15:00 UTC
Updated2023-04-25 14:06:00 UTC
Descriptionmatrix-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.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Matrix Javascript Sdk All All All All

References

ReferenceSourceLinkTags
Invisible eavesdropping in group calls · Advisory · matrix-org/matrix-js-sdk · GitHub MISC github.com
Release v24.1.0 · matrix-org/matrix-js-sdk · GitHub MISC github.com
MSC3401: Native Group VoIP Signalling by ara4n · Pull Request #3401 · matrix-org/matrix-spec-proposals · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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