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 Security Week: September 22nd, 2014
Linux Advisory Watch: September 19th, 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: 'ypbind' vulnerability Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
RedHat Linux ypbind as shipped in Red Hat Linux 5.x and 6.x is vulnerable to a localroot exploit.

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

Synopsis:          ypbind for Red Hat Linux 5.x, 6.x has a local root exploit
Advisory ID:       RHSA-2000:086-05
Issue date:        2000-10-16
Updated on:        2000-10-23
Product:           Red Hat Linux
Keywords:          ypbind string format buffer overflow syslog
Cross references:  N/A
---------------------------------------------------------------------

1. Topic:

ypbind as shipped in Red Hat Linux 5.x and 6.x is vulnerable to a local
root exploit.  All systems making use of NIS services are encouraged to
upgrade.

2. Relevant releases/architectures:

Red Hat Linux 5.0 - i386, alpha, sparc
Red Hat Linux 5.1 - i386, alpha, sparc
Red Hat Linux 5.2 - i386, alpha, sparc
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

3. Problem description:

Systems using Network Information Service, or NIS, use a daemon called
ypbind to request information from a NIS server.  This information is then
used by the local machine. The logging code in ypbind is vulnerable to a
printf string format attack which an attacker could exploit by passing
ypbind a carefully crafted request. This attack can successfully lead to
local root access.

This problem has been corrected with these new packages.

4. Solution:

If you do not use NIS, you should remove ypbind:

rpm -e ypbind

Otherwise, for each RPM for your particular architecture, run:

rpm -Fvh [filename]

where filename is the name of the RPM.

You should then make sure that the new ypbind is running by issuing:

/etc/rc.d/init.d/ypbind restart

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

N/A

6. RPMs required:

Red Hat Linux 5.x:

alpha: 
ftp://updates.Red Hat.com/5.2/alpha/ypbind-3.3-10.alpha.rpm

sparc: 
ftp://updates.Red Hat.com/5.2/sparc/ypbind-3.3-10.sparc.rpm

i386: 
ftp://updates.Red Hat.com/5.2/i386/ypbind-3.3-10.i386.rpm

sources: 
ftp://updates.Red Hat.com/5.2/SRPMS/ypbind-3.3-10.src.rpm

Red Hat Linux 6.x:

alpha: 
ftp://updates.Red Hat.com/6.2/alpha/ypbind-1.7-0.6.x.alpha.rpm

sparc: 
ftp://updates.Red Hat.com/6.2/sparc/ypbind-1.7-0.6.x.sparc.rpm

i386: 
ftp://updates.Red Hat.com/6.2/i386/ypbind-1.7-0.6.x.i386.rpm

sources: 
ftp://updates.Red Hat.com/6.2/SRPMS/ypbind-1.7-0.6.x.src.rpm

7. Verification:

MD5 sum                           Package Name
--------------------------------------------------------------------------
507ff0e63468e829b2c917789ba2fedd  5.2/SRPMS/ypbind-3.3-10.src.rpm
127274f9828d27f895e8d8eee8d38db6  5.2/alpha/ypbind-3.3-10.alpha.rpm
7bbf68a42a3c996c6f69b5ffaf2911f7  5.2/i386/ypbind-3.3-10.i386.rpm
3d0cd8b8700182b9b815525e1f99c82d  5.2/sparc/ypbind-3.3-10.sparc.rpm
d8caa439a1b6c7b26f843bacd01c65f8  6.2/SRPMS/ypbind-1.7-0.6.x.src.rpm
3a426e3060d31aa37b2a41d973ac3f63  6.2/alpha/ypbind-1.7-0.6.x.alpha.rpm
411017238af9a0a8891bd3078547336c  6.2/i386/ypbind-1.7-0.6.x.i386.rpm
3beff51d6a0292fd9d50fe24d07097ac  6.2/sparc/ypbind-1.7-0.6.x.sparc.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
Weekend Edition
Google to turn on encryption by default in next Android version
TOR users become FBI's No.1 hacking target after legal power grab
OWASP Releases Latest App Sec Guide
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.