Share your story
The central voice for Linux and Open Source security news
Home News Topics Advisories HOWTOs Features Newsletters About Register

Sign up!
EnGarde Community
What is the most important Linux security technology?
Linux Events
Linux User Groups
Link to Us
Security Center
Book Reviews
Security Dictionary
Security Tips
White Papers
Featured Blogs
All About Linux
DanWalsh LiveJournal
Latest Newsletters
Linux Security Week: March 23rd, 2015
Linux Advisory Watch: March 20th, 2015
LinuxSecurity Newsletters
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

RedHat: Updated PAM packages are available Print E-mail
User Rating:      How can I rate this item?
Posted by Team   
RedHat Linux Workstations running a display manager may potentially allow remote users to access console devices.
                   Red Hat, Inc. Security Advisory

Synopsis:          Updated PAM packages are available.
Advisory ID:       RHSA-2000:044-02
Issue date:        2000-07-21
Updated on:        2000-07-21
Product:           Red Hat Linux
Keywords:          N/A
Cross references:  N/A

1. Topic:

Updated pam packages are available for Red Hat Linux 6.x.
These packages fix a bug that would potentially allow
remote users to access console devices and shut down the
workstation if the workstation is running a display manager
(xdm, gdm, kdm, etc.) with XDMCP enabled.

2. Relevant releases/architectures:

Red Hat Linux 6.0 - i386, alpha, sparc
Red Hat Linux 6.1 - i386, alpha, sparc
Red Hat Linux 6.2 - i386, alpha, sparc

3. Problem description:

If a workstation is configured to use a display manager (xdm,
gdm, kdm, etc.) AND has XDMCP enabled, it is possible for a user
who logs in remotely to use Xnest -query to log in on display
:1, which is recognized as the system console.

This is the documented behavior for Red Hat Linux 6.0, 6.1, and
6.2.  This update disables this feature by default.  Users of Red
Hat Linux 5.x are not affected because the module
was not included in releases prior to 6.0.

4. Solution:

For each RPM for your particular architecture, run:

rpm -Fvh [filename]

where filename is the name of the RPM.

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

11165 - Gnome panel, ssh can allow remote non-root users to halt,reboot
12417 - man pages not installed properly in pam
12430 - /sbin/{pwdb,unix}_chkpwd not stripped

6. RPMs required:

Red Hat Linux 6.2:





7. Verification:

MD5 sum                           Package Name
1e0f9bd6ac389b40c90daba918c419eb  6.2/SRPMS/pam-0.72-20.src.rpm
8834754c1b0fd31ac4fa8f3e54bb7444  6.2/alpha/pam-0.72-20.alpha.rpm
b0376fbeb5fa31b1ac118b1831185959  6.2/i386/pam-0.72-20.i386.rpm
be592c19f8742f9dca85d6ef19cbfb80  6.2/sparc/pam-0.72-20.sparc.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 

8. References:


Copyright(c) 2000 Red Hat, Inc.
< Prev   Next >


Latest Features
Peter Smith Releases Linux Network Security Online
Securing a Linux Web Server
Password guessing with Medusa 2.0
Password guessing as an attack vector
Squid and Digest Authentication
Squid and Basic Authentication
Demystifying the Chinese Hacking Industry: Earning 6 Million a Night
Free Online security course (LearnSIA) - A Call for Help
What You Need to Know About Linux Rootkits
Review: A Practical Guide to Fedora and Red Hat Enterprise Linux - Fifth Edition
Yesterday's Edition
Tech Companies, Privacy Advocates Call for NSA Reform
Google warns of unauthorized TLS certificates trusted by almost all OSes
How Kevin Mitnick hacked the audience at CeBIT 2015
Partner Sponsor

Community | HOWTOs | Blogs | Features | Book Reviews | Networking
 Security Projects |  Latest News |  Newsletters |  SELinux |  Privacy |  Home
 Hardening |   About Us |   Advertise |   Legal Notice |   RSS |   Guardian Digital
(c)Copyright 2015 Guardian Digital, Inc. All rights reserved.