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CVE-2021-20233 A flaw was found in grub2 in versions prior to 2.06

Description

A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Produits et versions touchés

Produit Versions touchées Corrigé en
grub2 Versions non publiées

Références

Chronologie

  1. Publiée
  2. Dernière modification
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