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: April 21st, 2014
Linux Security Week: April 7th, 2014
Subscribe
LinuxSecurity Newsletters
E-mail:
Choose Lists:
About our Newsletters
RSS Feeds
Get the LinuxSecurity news you want faster with RSS
Powered By

  
New versions of cron fixes possible root exploit Print E-mail
User Rating:      How can I rate this item?
Posted by LinuxSecurity.com Team   
Debian Red Hat has recently released a Security Advisory (RHSA-1999:030-01) covering a reverse denial of service bug in the vixie cron package. As user you could restart sendmail even if the host should not receive mail through the SMTP port.
----------------------------------------------------------------------------
Debian Security Advisory                                 security@debian.org
http://www.debian.org/security/      
                         Martin Schulze
August 30, 1999
----------------------------------------------------------------------------


Red Hat has recently released a Security Advisory (RHSA-1999:030-01)
covering a reverse denial of service bug in the vixie cron package.
As user you could restart sendmail even if the host should not receive
mail through the SMTP port.

Further investigation of Caldera and Debian discovered that it was
even worse.  Red Hat did find a root exploit but didn' notice.  When
sending a mail to the user Vixie Cron ran as root, not checking the
mail address that was passed to sendmail on the commandline.


We recommend you upgrade your cron package immediately.


wget url
	will fetch the file for you
dpkg -i file.deb
        will install the referenced file.


Debian GNU/Linux 2.1 alias slink
--------------------------------

  This version of Debian was released only for the Intel, the
  Motorola 68xxx, the alpha and the Sun sparc architecture.

  Source archives:

    http://security.debian.org/dists/stable/updates/source/cron_3.0pl1
-50.2.diff.gz
      MD5 checksum: 96a4b55e06127c4a6cf31ee511227adb
    http://security.debian.org/dists/stable/updates/source/cron_3.0pl1-
50.2.dsc
      MD5 checksum: 3998735f00d3f10a5e290227db6bf611
    http://security.debian.org/dists/stable/updates/source/cron_3.0pl1.orig.ta
r.gz
      MD5 checksum: 4c64aece846f8483daf440f8e3dd210f

  Alpha architecture:

    http://security.debian.org/dists/stable/updates/binary-
alpha/cron_3.0pl1-50.2_alpha.deb
      MD5 checksum: cbab162fffd7dba71373b3eb62201b52

  Intel ia32 architecture:

    http://security.debian.org/dists/stable/updates/binary-
i386/cron_3.0pl1-50.2_i386.deb
      MD5 checksum: 85d9ffff103d0121101b7b80817d0abe

  Motorola 680x0 architecture:

    http://security.debian.org/dists/stable/updates/binary-
m68k/cron_3.0pl1-50.2_m68k.deb
      MD5 checksum: 62a039991c237a92c4a3cdcef4a328d7

  Sun Sparc architecture:

    http://security.debian.org/dists/stable/updates/binary-
sparc/cron_3.0pl1-50.2_sparc.deb
      MD5 checksum: 56f5e099ab621572b560706e1eec9ebb


Debian GNU/Linux pre2.2 alias potato
------------------------------------

  Source archives:

    http://security.debian.org/dists/unstable/updates/source/cron_3.0pl1
-52.diff.gz
      MD5 checksum: f500a0dc7175d64de4822f159a51d739
    http://security.debian.org/dists/unstable/updates/source/cron_3.0pl1-
52.dsc
      MD5 checksum: 1a16af335a106805ecdd6585a75ee61a
    http://security.debian.org/dists/unstable/updates/source/cron_3.0pl1.ori
g.tar.gz
      MD5 checksum: 4c64aece846f8483daf440f8e3dd210f

  Alpha architecture:

    http://security.debian.org/dists/unstable/updates/binary-
alpha/cron_3.0pl1-52_alpha.deb
      MD5 checksum: 8e5246a79269b8f489a3cdb7efc41661

  ARM architecture:

    http://security.debian.org/dists/unstable/updates/binary-
arm/cron_3.0pl1-52_arm.deb
      MD5 checksum: 8d103d4a60ec94d1f0fb07caabd34575

  Intel ia32 architecture:

    http://security.debian.org/dists/unstable/updates/binary-
i386/cron_3.0pl1-52_i386.deb
      MD5 checksum: a7f8de4f43aa21e2fe94fe602c6c2c83

  Motorola 680x0 architecture:

    http://security.debian.org/dists/unstable/updates/binary-
m68k/cron_3.0pl1-52_m68k.deb
      MD5 checksum: b2e866ecc10e95094202327eab5fc0fd

  PowerPC architecture:

    http://security.debian.org/dists/unstable/updates/binary-
powerpc/cron_3.0pl1-52_powerpc.deb
      MD5 checksum: 058a25564bc7c9c6fb153eafa0126cee

  Sun Sparc architecture:

    http://security.debian.org/dists/unstable/updates/binary-
sparc/cron_3.0pl1-52_sparc.deb
      MD5 checksum: ed34f37c41d9322ba094ede04d8d2e16


For not yet released architectures please refer to the appropriate
directory ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .

----------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ stable 
updates
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates
Mailing list: debian-security-announce@lists.debian.org

 
< 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
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.