Key Exchange without Entity Authentication Affecting matrix-js-sdk package, versions <19.7.0
Threat Intelligence
EPSS
0.13% (49th
percentile)
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Test your applications- Snyk ID SNYK-JS-MATRIXJSSDK-3035765
- published 29 Sep 2022
- disclosed 29 Sep 2022
- credit Unknown
Introduced: 29 Sep 2022
CVE-2022-39249 Open this link in a new tabHow to fix?
Upgrade matrix-js-sdk to version 19.7.0 or higher.
Overview
matrix-js-sdk is a Matrix Client-Server SDK for Javascript
Affected versions of this package are vulnerable to Key Exchange without Entity Authentication. An attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others. This attack is possible due to the matrix-js-sdk implementing a too permissive key forwarding strategy on the receiving end.
References
CVSS Scores
version 3.1