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Vigil@nce - FreeRADIUS: denial of service via Multithreaded BN_CTX Access

January 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/?langue=2

SYNTHESIS OF THE VULNERABILITY

Impacted products: FreeRADIUS.

Severity: 2/4.

Consequences: denial of service on service, denial of service on
client.

Provenance: intranet client.

Confidence: confirmed by the editor (5/5).

Creation date: 15/11/2019.

DESCRIPTION OF THE VULNERABILITY

An attacker can trigger a fatal error via Multithreaded BN_CTX
Access of FreeRADIUS, in order to trigger a denial of service.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/FreeRADIUS-denial-of-service-via-Multithreaded-BN-CTX-Access-30887


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