Gabriel Menezes Nunes has discovered a security issue in Gizmo, which can be exploited by malicious people to conduct spoofing attacks.
The security issue is caused due to the application improperly verifying the validity of the SSL certificate presented when logging in. This can be exploited to spoof a valid server and obtain the user's Gizmo username and password via e.g. a man-in-the-middle attack.
The security issue is confirmed in version 188.8.131.52 for Linux. Other versions may also be affected.
Solution: Do not rely on the security provided by SSL when using Gizmo.
Provided and/or discovered by: Gabriel Menezes Nunes
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