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Vulnerability of Bouncy Castle: privilege escalation via OpenBSDBCrypt.checkPassword

Synthesis of the vulnerability 

An attacker can bypass restrictions via OpenBSDBCrypt.checkPassword() of Bouncy Castle, in order to escalate his privileges.
Impacted products: Bouncy Castle JCE.
Severity of this bulletin: 2/4.
Creation date: 18/12/2020.
Références of this threat: CERTFR-2021-AVI-004, CVE-2020-28052, VIGILANCE-VUL-34167.

Description of the vulnerability 

An attacker can bypass restrictions via OpenBSDBCrypt.checkPassword() of Bouncy ...
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This vulnerability impacts software or systems such as Bouncy Castle JCE.

Our Vigil@nce team determined that the severity of this security announce is medium.

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

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this computer vulnerability note.

Solutions for this threat 

Patches for this vulnerability are not yet public.
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