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Vulnerability of Bouncy Castle: vulnerability of CTR DRBG

Synthesis of the vulnerability 

An attacker can predict randoms generated by the CTR DRBG of Bouncy Castle.
Impacted systems: Bouncy Castle JCE.
Severity of this alert: 2/4.
Creation date: 02/03/2015.
Références of this alert: VIGILANCE-VUL-16289.

Description of the vulnerability 

The Bouncy Castle library implements a DRBG (Deterministic Random Bit Generator) using a counter (CTR).

A vulnerability in CTR DRBG of Bouncy Castle was announced.

An attacker can therefore predict randoms generated by the CTR DRBG of Bouncy Castle.
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This threat note impacts software or systems such as Bouncy Castle JCE.

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

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this vulnerability note.

Solutions for this threat 

Bouncy Castle: version 1.52.
The version 1.52 is fixed:
  http://www.bouncycastle.org/latest_releases.html
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