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Vigil@nce - SHA1: information disclosure via Chosen-Prefix Collision

January 2020 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/offer/Computer-vulnerabilities-watch-and-alert

SYNTHESIS OF THE VULNERABILITY

Impacted products: GnuPG, Ubuntu.

Severity: 1/4.

Consequences: data reading, data creation/edition.

Provenance: document.

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

Creation date: 09/01/2020.

DESCRIPTION OF THE VULNERABILITY

An attacker can trigger a Chosen-Prefix Collision on SHA1, in
order to alter a signature, to obtain sensitive information.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/SHA1-information-disclosure-via-Chosen-Prefix-Collision-31290


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