CVE-2023-29529

Published Apr 14, 2023

Last updated 2 years ago

Overview

Description: 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.
Source: security-advisories@github.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 5.3
Impact score: 1.4
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Severity: MEDIUM

Weaknesses

nvd@nist.gov: NVD-CWE-noinfo
security-advisories@github.com: CWE-862

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:matrix:javascript_sdk:*:*:*:*:*:node.js:*:*",
            "vulnerable": true,
            "matchCriteriaId": "F434D632-322B-4A24-A585-53A983E63A6A",
            "versionEndExcluding": "24.1.0"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

References