PT-2023-22302 · Unknown+1 · Matrix-Js-Sdk+1

Kasak · Published 2023-04-14 · Updated 2023-04-25 · CVE-2023-29529

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions matrix-js-sdk versions prior to 24.1.0

Description 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.

Recommendations For versions prior to 24.1.0, update to version 24.1.0 to resolve the issue. As a temporary workaround, users may hold group calls in private rooms where only the exact users who are expected to participate in the call are present.

Exploit

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2023-29529

GHSA-6G67-Q39G-R79Q

Affected Products

Debian

Matrix-Js-Sdk

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29529.json · Exploit
• https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-6g67-q39g-r79q · Vendor Advisory
• https://github.com/matrix-org/matrix-spec-proposals/pull/3401 · Patch
• https://osv.dev/vulnerability/GHSA-6g67-q39g-r79q · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-29529 · Security Note
• https://osv.dev/vulnerability/CVE-2023-29529 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-29529 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-29529 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-29529 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-29529 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-29529 · Vendor Advisory
• https://github.com/matrix-org/matrix-js-sdk · Note
• https://github.com/matrix-org/matrix-js-sdk/releases/tag/v24.1.0 · Note
• https://t.me/cvenotify/49027 · Telegram Post
• https://t.me/cibsecurity/62172 · Telegram Post