CVE-2013-4577: Low severity GNU GRUB vulnerability
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 passwordpbkdf2 directive in the file.
Affected Software
Remediation
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2013-4577?
CVE-2013-4577 is classified as a low severity vulnerability due to its nature of allowing local users to read sensitive information.
How does CVE-2013-4577 affect GNU GRUB?
CVE-2013-4577 affects GNU GRUB by allowing local users to obtain password hashes from the world-readable grub.cfg file.
How do I fix CVE-2013-4577?
To fix CVE-2013-4577, change the permissions of the grub.cfg file to restrict access to only authorized users.
Who is impacted by CVE-2013-4577?
Local users of systems using affected versions of GNU GRUB with improperly set permissions are impacted by CVE-2013-4577.
What kind of information can be exposed due to CVE-2013-4577?
CVE-2013-4577 can expose sensitive password hashes stored in the grub.cfg file.