GNU GRUB Local Authentication Bypass Vulnerability

BID:36968

Info

GNU GRUB Local Authentication Bypass Vulnerability

Bugtraq ID: 36968
Class: Design Error
CVE: CVE-2009-4128
Remote: No
Local: Yes
Published: Nov 08 2009 12:00AM
Updated: Dec 10 2009 10:24PM
Credit: [email protected]
Vulnerable: Ubuntu Ubuntu Linux 9.10 sparc
Ubuntu Ubuntu Linux 9.10 powerpc
Ubuntu Ubuntu Linux 9.10 lpia
Ubuntu Ubuntu Linux 9.10 i386
Ubuntu Ubuntu Linux 9.10 amd64
GNU GRUB 1.97
Not Vulnerable: GNU GRUB 1.97.1

Discussion

GNU GRUB Local Authentication Bypass Vulnerability

GNU GRUB is prone to a local authentication-bypass vulnerability.

A local attacker with physical access to an affected host can exploit this issue to bypass authentication. This may aid in the complete compromise of the affected system.

GNU GRUB 1.97 is affected; other versions may be vulnerable as well.

Exploit / POC

GNU GRUB Local Authentication Bypass Vulnerability

An attacker can carry out this attack by gaining physical access to a vulnerable computer.

Solution / Fix

GNU GRUB Local Authentication Bypass Vulnerability

Solution:
Updates are available. Please see the references for details.


GNU GRUB 1.97

Ubuntu Ubuntu Linux 9.10 lpia

Ubuntu Ubuntu Linux 9.10 sparc

Ubuntu Ubuntu Linux 9.10 i386

Ubuntu Ubuntu Linux 9.10 amd64

References

GNU GRUB Local Authentication Bypass Vulnerability

References:

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