Rapid7 Vulnerability & Exploit Database

ELSA-2015-2623 Moderate: Oracle Linux grub2 security and bug fix update

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ELSA-2015-2623 Moderate: Oracle Linux grub2 security and bug fix update

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
12/16/2015
Created
07/25/2018
Added
12/18/2015
Modified
04/11/2019

Description

Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an "Off-by-two" or "Out of bounds overwrite" memory error.

Solution(s)

  • oracle-linux-upgrade-grub2
  • oracle-linux-upgrade-grub2-efi
  • oracle-linux-upgrade-grub2-efi-modules
  • oracle-linux-upgrade-grub2-tools

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