matrix-js-sdk could allow a remote attacker to bypass security restrictions, caused by key/device identifier confusion in SAS verification. By sending a specially-crafted request, an attacker could exploit this vulnerability to interfere with the verification flow between two users, and inject their own cross-signing user identity in place of one of the users identities.
CVSS 3.0 Information
Privileges Required: None
User Interaction: None
Access Vector: Network
Access Complexity: Low
Confidentiality Impact: None
Integrity Impact: High
Availability Impact: None
Remediation Level: Official Fix
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