FreeBSD Ports brouted Installation Permission Vulnerability

BID:1629

Info

FreeBSD Ports brouted Installation Permission Vulnerability

Bugtraq ID: 1629
Class: Configuration Error
CVE: CVE-2000-0752
Remote: No
Local: Yes
Published: Aug 28 2000 12:00AM
Updated: Jul 11 2009 02:56AM
Credit: This vulnerability was made public in a FreeBSD security advisory on August 28, 2000.
Vulnerable: FreeBSD FreeBSD 5.0 alpha
FreeBSD FreeBSD 5.0
FreeBSD FreeBSD 4.1
FreeBSD FreeBSD 4.0 alpha
FreeBSD FreeBSD 4.0
FreeBSD FreeBSD 3.5
Not Vulnerable:

Discussion

FreeBSD Ports brouted Installation Permission Vulnerability

A vulnerability exists in the FreeBSD ports package for the brouted program. Vulnerable versions of brouted were available in the ports packages for 3.5-RELEASE and 4.1-RELEASE until August 22, 2000. Subsequent installations of the ports package are not vulnerable.

brouted is incorrectly installed with setgid kmem permissions. Versions of the port released prior to August 22, 2000 had buffer overflows in the command line argument handling. This could lead to local users being able to execute arbitrary code with GID kmem permissions. This could be used to elevate privilege to that of root by manipulating kernel memory.

Exploit / POC

FreeBSD Ports brouted Installation Permission Vulnerability

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

Solution / Fix

FreeBSD Ports brouted Installation Permission Vulnerability

Solution:
Versions of the port obtained after August 22, 2000 are not vulnerable. Newer versions of the packages are available for users who have older versions of the ports heirarchy.


FreeBSD FreeBSD 3.5

FreeBSD FreeBSD 4.0 alpha

FreeBSD FreeBSD 4.0

FreeBSD FreeBSD 4.1

FreeBSD FreeBSD 5.0

FreeBSD FreeBSD 5.0 alpha

References

FreeBSD Ports brouted Installation Permission Vulnerability

References:
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