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Vulnerability of Microsoft .NET: privilege escalation via Microsoft.IdentityModel.Tokens

Synthesis of the vulnerability 

An attacker can bypass restrictions via Microsoft.IdentityModel.Tokens of Microsoft .NET, in order to escalate his privileges.
Impacted software: .NET Framework.
Severity of this computer vulnerability: 2/4.
Creation date: 11/01/2017.
Références of this announce: 3214296, VIGILANCE-VUL-21544.

Description of the vulnerability 

An attacker can bypass restrictions via Microsoft.IdentityModel.Tokens of Microsoft .NET, in order to escalate his privileges.
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This weakness alert impacts software or systems such as .NET Framework.

Our Vigil@nce team determined that the severity of this computer vulnerability note is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this security bulletin.

Solutions for this threat 

Microsoft .NET: solution for Microsoft.IdentityModel.Tokens.
The solution is indicated in information sources.
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