Sandbox Bypass

Affecting matrix-react-sdk package, versions <3.15.0

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Overview

matrix-react-sdk is a SDK for matrix.org using React

Affected versions of this package are vulnerable to Sandbox Bypass. The user content sandbox can be abused to trick users into opening unexpected documents. Messages and secrets are not at risk: the content is opened with a blob origin, which cannot access Matrix user data.

Remediation

Upgrade matrix-react-sdk to version 3.15.0 or higher.

References

CVSS Score

2.6
low severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    Low
  • User Interaction
    Required
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    Low
  • Availability
    None
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Credit
Unknown
CVE
CVE-2021-21320
CWE
CWE-20 CWE-265
Snyk ID
SNYK-JS-MATRIXREACTSDK-1080741
Disclosed
02 Mar, 2021
Published
02 Mar, 2021