Linux Today: Linux News On Internet Time.

More on LinuxToday

Red Hat Security Advisory: New version of usermode, pam

Jan 04, 2000, 17:12 (0 Talkback[s])
(Other stories by Michael K. Johnson)

Date: Tue, 04 Jan 2000 11:58:23 -0500
From: "Michael K. Johnson" johnsonm@redhat.com
To: redhat-watch-list@redhat.com

Red Hat, Inc. Security Advisory

Synopsis: New version of usermode fixes security bug
Advisory ID: RHSA-2000:001-01
Issue date: 2000-01-04
Updated on: 2000-01-04
Keywords: root userhelper pam
Cross references:

1. Topic:

A security bug has been discovered and fixed in the userhelper program.

2. Relevant releases/architectures:

Red Hat Linux 6.0 and 6.1, all architectures.

3. Problem description:

A security bug was found in userhelper; the bug can be exploited to provide local users with root access.

The bug has been fixed in userhelper-1.17, and pam-0.68-10 has been modified to help prevent similar attacks on other software in the future.

4. Solution:

For each RPM for your particular architecture, run:
rpm -Uvh
where filename is the name of the RPM.

5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla/ for more info):

6. Obsoleted by:

7. Conflicts with:

8. RPMs required:




Source packages:

9. Verification:

MD5 sum                           Package Name 

bffd4388103fa99265e267eab7ae18c8 i386/pam-0.68-10.i386.rpm
2d69859d2b1d2180d254fc263bdccf94 i386/usermode-1.17-1.i386.rpm
fed2c2ad4f95829e14727a9dfceaca07 alpha/pam-0.68-10.alpha.rpm
83c69cb92b16bb0eef295acb4c857657 alpha/usermode-1.17-1.alpha.rpm
350662253d09b17d0aca4e9c7a511675 sparc/pam-0.68-10.sparc.rpm
d89495957c9a438fda657b8a4a5f5578 sparc/usermode-1.17-1.sparc.rpm
f9ad800f56b7bb05ce595bad824a990d SRPMS/pam-0.68-10.src.rpm
1d3b367d257a57de7d834043a4fcd87a SRPMS/usermode-1.17-1.src.rpm

These packages are GPG signed by Red Hat, Inc. for security. Our key is available at:

You can verify each package with the following command:
rpm --checksig

If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command:
rpm --checksig --nogpg

10. References:

Thanks to dildog@l0pht.com for finding this bug.