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

Welcome!
Sign up!
EnGarde Community
Login
Polls
What is the most important Linux security technology?
 
Advisories
Community
Linux Events
Linux User Groups
Link to Us
Security Center
Book Reviews
Security Dictionary
Security Tips
SELinux
White Papers
Featured Blogs
All About Linux
DanWalsh LiveJournal
Securitydistro
Latest Newsletters
Linux Advisory Watch: July 18th, 2014
Linux Advisory Watch: July 13th, 2014
Subscribe
LinuxSecurity Newsletters
E-mail:
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

  
Redhat: 'usermode' update Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
RedHat Linux Updated usermode packages are now available for Red Hat Linux 6.x and 7.

---------------------------------------------------------------------
                   Red Hat, Inc. Security Advisory

Synopsis:          Updated usermode packages available
Advisory ID:       RHSA-2000:075-05
Issue date:        2000-10-05
Updated on:        2000-10-09
Product:           Red Hat Linux
Keywords:          usermode format-string
Cross references:  N/A
---------------------------------------------------------------------

1. Topic:

Updated usermode packages are now available for Red Hat Linux 6.x and 7.

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
Red Hat Linux 6.2EE - i386, alpha, sparc
Red Hat Linux 7.0 - i386
Red Hat Linux 7.0J - i386

3. Problem description:

The usermode package contains a binary (/usr/bin/userhelper), which is used
to control access to programs which are to be executed as root.  Because
programs invoked by userhelper are not actually running setuid-root,
security measures built into recent versions of glibc are not active.

If one of these programs supports internationalized text messages, a
malicious user can use the LANG or LC_ALL environment variables (which are
inherited by userhelper and, in turn, any programs it runs) to create a
format-string exploit in these programs.

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 Hat.com/bugzilla for more info):

18046 - Another security hole in usermode/glibc


6. RPMs required:

Red Hat Linux 6.0 and 6.1:

alpha: 
ftp://updates.Red Hat.com/6.2/alpha/usermode-1.36-2.6.x.alpha.rpm 
ftp://updates.Red Hat.com/6.2/alpha/SysVinit-2.78-5.alpha.rpm

sparc: 
ftp://updates.Red Hat.com/6.2/sparc/usermode-1.36-2.6.x.sparc.rpm 
ftp://updates.Red Hat.com/6.2/sparc/SysVinit-2.78-5.sparc.rpm

i386: 
ftp://updates.Red Hat.com/6.2/i386/usermode-1.36-2.6.x.i386.rpm 
ftp://updates.Red Hat.com/6.2/i386/SysVinit-2.78-5.i386.rpm

sources: 
ftp://updates.Red Hat.com/6.2/SRPMS/usermode-1.36-2.6.x.src.rpm 
ftp://updates.Red Hat.com/6.2/SRPMS/SysVinit-2.78-5.src.rpm

Red Hat Linux 6.2:

alpha: 
ftp://updates.Red Hat.com/6.2/alpha/usermode-1.36-2.6.x.alpha.rpm

sparc: 
ftp://updates.Red Hat.com/6.2/sparc/usermode-1.36-2.6.x.sparc.rpm

i386: 
ftp://updates.Red Hat.com/6.2/i386/usermode-1.36-2.6.x.i386.rpm

sources: 
ftp://updates.Red Hat.com/6.2/SRPMS/usermode-1.36-2.6.x.src.rpm

Red Hat Linux 7.0:

i386: 
ftp://updates.Red Hat.com/7.0/i386/usermode-1.36-3.i386.rpm

sources: 
ftp://updates.Red Hat.com/7.0/SRPMS/usermode-1.36-3.src.rpm

7. Verification:

MD5 sum                           Package Name
--------------------------------------------------------------------------
3310677ae7403c683e7947cd86b19344  6.2/SRPMS/SysVinit-2.78-5.src.rpm
c96aaae0df6782bb09bd65fb1d6dc69b  6.2/SRPMS/usermode-1.36-2.6.x.src.rpm
546bf7949c5be73b9f28b1819bfbd7c6  6.2/alpha/SysVinit-2.78-5.alpha.rpm
afb4ad3a5715c0df6596a19db4d2b3c8  6.2/alpha/usermode-1.36-2.6.x.alpha.rpm
ca5b97a1abb47b64d71ef69ab96fcb8a  6.2/i386/SysVinit-2.78-5.i386.rpm
c2bac5d41ee077d2db48ed9462802ff0  6.2/i386/usermode-1.36-2.6.x.i386.rpm
4dfeacb8db12af4b2666f2792e1027c1  6.2/sparc/SysVinit-2.78-5.sparc.rpm
8567bb088fb7cab3e298d0df24f8c626  6.2/sparc/usermode-1.36-2.6.x.sparc.rpm
5ac6cca0a146d917e0ec3f6f1e046fa8  7.0/SRPMS/usermode-1.36-3.src.rpm
5d40e125fa0a31f05b8dac9321a1fa88  7.0/i386/usermode-1.36-3.i386.rpm

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
     http://www.Red Hat.com/corp/contact.html

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:

N/A


Copyright(c) 2000 Red Hat, Inc.




 
< Prev   Next >
    
Partner

 

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
Router hacking competition announced for Defcon
EFF wants hackers to help build an open, secure router
Hackers Could Take Control of Your Car. This Device Can Stop Them
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 2014 Guardian Digital, Inc. All rights reserved.