User content sandbox can be confused into opening arbitrary documents
CVE-2021-21320

2.6LOW

Key Information:

Vendor

Matrix-org

Status
Matrix-react-sdk
Vendor
CVE Published:
2 March 2021

What is CVE-2021-21320?

matrix-react-sdk is an npm package which is a Matrix SDK for React Javascript. In matrix-react-sdk before version 3.15.0, the user content sandbox can be abused to trick users into opening unexpected documents. The content is opened with a blob origin that cannot access Matrix user data, so messages and secrets are not at risk. This has been fixed in version 3.15.0.

Affected Version(s)

matrix-react-sdk < 3.15.0

References

https://github.com/matrix-org/matrix-react-sdk/security/a...
x_refsource_CONFIRM
https://github.com/matrix-org/matrix-react-sdk/pull/5657
x_refsource_MISC
https://github.com/matrix-org/matrix-react-sdk/commit/b38...
x_refsource_MISC

CVSS V3.1

Score:
2.6
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.