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Vigil@nce - yubihsm-shell: buffer overflow via yh_create_session

December 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability

SYNTHESIS OF THE VULNERABILITY

Impacted products: Fedora.

Severity: 2/4.

Consequences: user access/rights, denial of service on service,
denial of service on client.

Provenance: user shell.

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

Creation date: 29/10/2020.

DESCRIPTION OF THE VULNERABILITY

An attacker can trigger a buffer overflow via yh_create_session()
of yubihsm-shell, in order to trigger a denial of service, and
possibly to run code.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/yubihsm-shell-buffer-overflow-via-yh-create-session-33730


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