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