Vulnerability Note VU#134025

kernel-utils sets insecure permissions on "uml_net" utility

Original Release date: 11 Feb 2003 | Last revised: 11 Feb 2003


The uml_net utility, part of the kernel-utils package in Red Hat Linux 8.0, was shipped with incorrect permissions.


User-Mode Linux (UML) is a tool to provide a virtual machine in which to run another copy of Linux. In Red Hat linux 8.0, the kernel-utils package contains the UML utilities. One of the UML utilities, uml_net, was incorrectly shipped setuid root.


Local users could control network interfaces, put interfaces into promiscuous mode, and add and remove arp entries and routes.


Apply a patch as described in the Red Hat bulletin. If a patch cannot be applied, you can remove the suid bit from the uml_net package with the following command:

chmod -s /usr/bin/uml_net

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Red Hat Inc.Affected07 Feb 200311 Feb 2003
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



Red Hat has credited Johny Robertson for discovering this issue.

This document was written by Shawn Hernan based on information provided by Red Hat and other sources.

Other Information

  • CVE IDs: CAN-2003-0019
  • Date Public: 07 Feb 2003
  • Date First Published: 11 Feb 2003
  • Date Last Updated: 11 Feb 2003
  • Severity Metric: 15.82
  • Document Revision: 4


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