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 30th, 2015
Linux Advisory Watch: March 27th, 2015
LinuxSecurity Newsletters
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

RedHat: 'syslogd' vulnerabilities Print E-mail
User Rating:      How can I rate this item?
Posted by Team   
RedHat Linux Various vulnerabilities exist in syslogd/klogd. By exploiting these vulnerabilities, it could be possible for local users to gain root access.
                   Red Hat, Inc. Security Advisory

Synopsis:          syslog format vulnerability in klogd
Advisory ID:       RHSA-2000:061-02
Issue date:        2000-09-18
Updated on:        2000-09-18
Product:           Red Hat Linux
Keywords:          syslog format string klogd syslogd
Cross references:  N/A

1. Topic:

Various vulnerabilities exist in syslogd/klogd. By exploiting these
vulnerabilities, it could be possible for local users to gain root
access. No remote exploit exists at this time, but it remains
theoretically possible that this vulnerability could be exploited
remotely under certain rare circumstances.

All users should upgrade to the new sysklogd packages. Users of
Red Hat Linux 6.0 and 6.1 should use the packages for Red Hat
Linux 6.2.

2. Relevant releases/architectures:

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

3. Problem description:

klogd contains instances of the:
    syslog( LOG_INFO, buffer );
vulnerability that has been recently been discussed on Bugtraq and similar 
mailing lists; by supplying some string that contains '%' escapes, it is
possible to have those escapes interpreted, which can lead to the ability
to gain root access.

Also, there are a couple of minor buffer overflow/termination problems that
could allow local users to crash syslogd and cause bogus messages to be
printed on the local system console.

The updated sysklogd packages fix these vulnerabilities/issues.

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):


6. RPMs required:

Red Hat Linux 5.2:





Red Hat Linux 6.2:





7. Verification:

MD5 sum                           Package Name
cd92613fc9a7409a90f6ff774e6e85d7  5.2/SRPMS/sysklogd-1.3.31-1.6.src.rpm
c7c44b7a38f4518daecca77cf7d45ba8  5.2/alpha/sysklogd-1.3.31-1.6.alpha.rpm
f100359030451c4be9b3bd99c3ec73a1  5.2/i386/sysklogd-1.3.31-1.6.i386.rpm
1c7f004ca29c966e0a03896f239d1317  5.2/sparc/sysklogd-1.3.31-1.6.sparc.rpm
69d50a8a9d490598fc11eef40fdf4552  6.2/SRPMS/sysklogd-1.3.31-17.src.rpm
2a7e2c7848d1f2d9607f3e6e3702cf2e  6.2/alpha/sysklogd-1.3.31-17.alpha.rpm
287d5022aa9d1a6ba9e03c51acc85229  6.2/i386/sysklogd-1.3.31-17.i386.rpm
150a05567dd4d626326028b1ac31f34d  6.2/sparc/sysklogd-1.3.31-17.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:

Thanks go to Jouko Pynnonen, Solar Designer, and Daniel Jacobowitz
for discovering the vulnerabilities and providing patches.

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
Feds Charged With Stealing Money During Silk Road Investigation
EFF questions US government's software flaw disclosure policy
Hotel Router Vulnerability A Reminder Of Untrusted WiFi Risks
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.