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computer vulnerability alert 16396

Windows: fraudulent certificate emitted for Live.fi

Synthesis of the vulnerability

An attacker, who owns the "www.live.fi" certificate, can use a Man-in-the-middle attack on a fake Live site, in order for example to obtain sensitive information.
Impacted software: Windows 2003, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 7, Windows 8, Windows Mobile, Windows RT, Windows Vista.
Severity of this computer vulnerability: 3/4.
Consequences of an attack: data reading, data creation/edition.
Attacker's origin: internet server.
Creation date: 17/03/2015.
Références of this announce: 3046310, VIGILANCE-VUL-16396.

Description of the vulnerability

The Windows system is installed with trusted certification authorities, such as "COMODO RSA Domain Validation Secure Serve CA".

However, this authority published a malicious certificate for "www.live.fi".

An attacker, who owns the malicious "www.live.fi" certificate, can therefore use a Man-in-the-middle attack on a fake Live site, in order for example to obtain sensitive information.
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