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Vulnerability of Apereo CAS Server: bad PRNG

Synthesis of the vulnerability 

An attacker can predict the output of the PRNG in Apereo CAS Server, in order to guess secrets or spoof users.
Vulnerable products: CAS Server.
Severity of this weakness: 1/4.
Creation date: 24/09/2019.
Références of this bulletin: VIGILANCE-VUL-30390.

Description of the vulnerability 

An attacker can predict the output of the PRNG in Apereo CAS Server, in order to guess secrets or spoof users.
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This security threat impacts software or systems such as CAS Server.

Our Vigil@nce team determined that the severity of this computer weakness note is low.

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 computer threat alert.

Solutions for this threat 

Apereo CAS Server: version 6.0.5.1.
The version 6.0.5.1 is fixed:
  https://github.com/apereo/cas/releases/

Apereo CAS Server: version 5.3.12.1.
The version 5.3.12.1 is fixed:
  https://github.com/apereo/cas/releases/
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