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

  
Security hole in cron Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
SuSE Three security threats were found in the vixie crond, which is shipped with SuSE Linux. 1) no boundchecking on a local buffer, while copying data from MAILTO 2) passing invalid options to sendmail 3) it doesn't drop root privileges while sending acknowledge mail to a user
______________________________________________________________________________

                        SuSE Security Announcement

        Package:  cron-3.0.1-75 (Vixie Cron) and previous versions
        Date:     Fri Aug 27 17:56:48 CEST 1999
        Affected: maybe all Unix operatingsystems using crond
______________________________________________________________________________

Some security holes were discovered in the package mentioned above.
Please update as soon as possible or disable the service if you are using
this software on your SuSE Linux installation(s).

Other Linux distributions or operating systems might be affected as
well, please contact your vendor for information about this issue.

Please note, that that we provide this information on as "as-is" basis only.
There is no warranty whatsoever and no liability for any direct, indirect or
incidental damage arising from this information or the installation of
the update package.
_____________________________________________________________________________

1. Problem Description

  Three security threats were found in the vixie crond, which is shipped
  with SuSE Linux.
  1)  no boundchecking on a local buffer, while copying data from MAILTO
  2)  passing invalid options to sendmail
  3)  it doesn't drop root privileges while sending acknowledge mail
      to a user

2. Impact

  1)   local root compromise by putting arbitrary code on the stack
  2/3) triggering a local denial-of-service attack by starting alot
       of sendmail daemons
       execute sendmail with options that only root could apply
       (like '-C'), which also leads to local root compromise

3. Solution

  Updated the crond package from our FTP server.

______________________________________________________________________________

Here are the md5 checksums of the upgrade packages, please verify these
before installing the new packages:

bfc9ab01fdfd36eebb3cc398bbb34c37  cron-3.0.1-84.i386.rpm (6.2)
8998dbecf020d8a6f7ba1a2885f986da  cron-3.0.1-82.i386.rpm (6.1)

______________________________________________________________________________

You will find the update on our ftp-Server:
  ftp://ftp.suse.com/pub/suse/i386/update/6.2/a1/cron-3.0.1-84.i386.rpm
  ftp://ftp.suse.com/pub/suse/i386/update/6.1/a1/cron-3.0.1-82.i386.rpm

Webpage for patches:
  http://www.suse.de/patches/index.html

or try the following web pages for a list of mirrors:
  http://www.suse.de/ftp.html
  http://www.suse.com/ftp_new.html

______________________________________________________________________________
 
< 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
Home router security holes to be exposed at Def Con 22 hacker meet up
Edward Snowden Calls on Hackers to Help Whistleblowers Leak More Secrets
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.