RedHat Single User Mode Authentication Vulnerability

BID:1005

Info

RedHat Single User Mode Authentication Vulnerability

Bugtraq ID: 1005
Class: Failure to Handle Exceptional Conditions
CVE: CVE-2000-0219
Remote: No
Local: No
Published: Feb 23 2000 12:00AM
Updated: Jul 11 2009 01:56AM
Credit: This vulnerability was posted to the Bugtraq mailing list by Darren Reed <[email protected]>
Vulnerable: Redhat Linux 6.0
Not Vulnerable:

Discussion

RedHat Single User Mode Authentication Vulnerability

A vulnerability exists in the manner in which RedHat Linux 6.0 protects the obtaining of a shell by booting single user mode. RedHat will prompt for the root password upon entering single user mode. Pressing ^C (causing a SIGINT to be sent) immediately results in a root shell being made available.

Exploit / POC

RedHat Single User Mode Authentication Vulnerability

boot single user from lilo, and press ^C (control-C)

Solution / Fix

RedHat Single User Mode Authentication Vulnerability

Solution:
Currently the SecurityFocus staff are not aware of any vendor supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

Upgrading to versions of RedHat post 6.0 will correct this problem.

References

RedHat Single User Mode Authentication Vulnerability

References:

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