First published: Sun Jul 03 2011(Updated: )
A certain Debian patch for GNU GRUB uses world-readable permissions for grub.cfg, which allows local users to obtain password hashes, as demonstrated by reading the password_pbkdf2 directive in the file.
Credit: secalert@redhat.com
Affected Software | Affected Version | How to fix |
---|---|---|
GRUB for EFI (ARM64) |
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
CVE-2013-4577 is classified as a low severity vulnerability due to its nature of allowing local users to read sensitive information.
CVE-2013-4577 affects GNU GRUB by allowing local users to obtain password hashes from the world-readable grub.cfg file.
To fix CVE-2013-4577, change the permissions of the grub.cfg file to restrict access to only authorized users.
Local users of systems using affected versions of GNU GRUB with improperly set permissions are impacted by CVE-2013-4577.
CVE-2013-4577 can expose sensitive password hashes stored in the grub.cfg file.