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vulnerability note CVE-2015-1648

Microsoft .NET: information disclosure via customErrors

Synthesis of the vulnerability

An attacker can generate an error in a Microsoft .NET/ASP.NET application, in order to obtain sensitive information.
Vulnerable systems: IIS, .NET Framework, Windows 2003, Windows 2008 R0, Windows 2008 R2, Windows 2012, Windows 7, Windows 8, Windows RT, Windows Vista.
Severity of this threat: 2/4.
Consequences of an attack: data reading.
Pirate's origin: internet client.
Creation date: 14/04/2015.
Références of this weakness: 3048010, CERTFR-2015-AVI-159, CVE-2015-1648, MS15-041, VIGILANCE-VUL-16604.

Description of the vulnerability

The Microsoft .NET uses the ASP.NET customErrors directive to define the type of error messages to be displayed.

However, when the customErrors mode is disabled, an attacker can trigger an error in order to read details about the application.

An attacker can therefore generate an error in a Microsoft .NET/ASP.NET application, in order to obtain sensitive information.
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