Exploit maturity not defined.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade mellium.im/xmpp/websocket
to version 0.21.1 or higher.
mellium.im/xmpp/websocket is an used to dial and negotiate WebSocket connections.
Affected versions of this package are vulnerable to Improper Certificate Validation. If no TLS configuration is provided by the user, the WebSocket package constructs its own TLS configuration using recommended defaults. When looking up a WSS endpoint using the DNS TXT record method the ServerName field was incorrectly being set to the name of the server returned by the TXT record request, not the name of the initial server the user was attempting to connect. This means that any attacker that can spoof a DNS record could redirect the user to a server of the attacker choosing and as long as it had a valid TLS certificate for itself the connection would succeed, resulting in a MITM situation.
All users should upgrade to v0.21.1.
To work around the issue, manually specify a TLS configuration with the correct hostname.
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