Operating System:

Published:

31 August 1999

Protect yourself against future threats.

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              AUSCERT External Security Bulletin Redistribution
                             
                      ESB-1999.129 -- RHSA-1999:034-01
                         Buffer overflow in proftpd
                              01 September 1999

===========================================================================

Red Hat, Inc. has released the following advisory concerning a buffer 
overflow vulnerability in proftpd.  This vulnerability may allow remote 
users to gain privileged access.

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		   Red Hat, Inc. Security Advisory

Synopsis:		Buffer overflow in proftpd
Advisory ID:		RHSA-1999:034-01
Issue date:		1999-08-31
Keywords:		proftpd buffer overflow remote exploit
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1. Topic:

proftpd is a ftp server that is shipped by Red Hat as part of the Powertools
CD collection. It is not enabled nor installed by default. However, if you
have switched to proftpd and you are using the version shipped on the Red
Hat Powertoold 6.0 CD you are at risk.

2. Bug IDs fixed:

N/A

3. Relevant releases/architectures:

Red Hat Linux 6.0, all architectures

4. Obsoleted by:

5. Conflicts with:

6. RPMs required:

Intel:
  ftp://updates.redhat.com/powertools/6.0/i386/proftpd-1.2.0pre3-6.i386.rpm

Alpha:

ftp://updates.redhat.com/powertools/6.0/alpha/proftpd-1.2.0pre3-6.alpha.rpm

Sparc:

ftp://updates.redhat.com/powertools/6.0/sparc/proftpd-1.2.0pre3-6.sparc.rpm

Source packages:
  ftp://updates.redhat.com/powertools/6.0/SRPMS/proftpd-1.2.0pre3-6.src.rpm

7. Problem description:

An explotable buffer overflow security problem in the proftpd daemon has
been fixed. The vulnerability is actively exploited on the Internet and site
administrators are stronly advised to upgrade to the new packages.

Thanks to the members of the BUGTRAQ mailing list and Nic Bellamy for
providing a fix.

8. Solution:

For each RPM for your particular architecture, run:
 
rpm -Uvh <filename>
 
where filename is the name of the RPM.

9. Verification:

MD5 sum                           Package Name
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71dfdb94daea8b6f043016ff25d80ccc  i386/proftpd-1.2.0pre3-6.i386.rpm
a8f2d44de9fb5607c5a43c761af5f1a2  alpha/proftpd-1.2.0pre3-6.alpha.rpm
9091ad2a484b85263576c4a6b3c8b4ab  sparc/proftpd-1.2.0pre3-6.sparc.rpm
5e374a647f6fd104046b726bf221b3cd  SRPMS/proftpd-1.2.0pre3-6.src.rpm

These packages are PGP signed by Red Hat Inc. for security.  Our key
is available at:
 
http://www.redhat.com/corp/contact.html
 
You can verify each package with the following command:
 
rpm --checksig  <filename>
 
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 --nopgp <filename>

10. References:

Cristian
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Cristian Gafton     --     gafton@redhat.com      --     Red Hat, Inc.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  "How could this be a problem in a country where we have Intel and 
   Microsoft?"  --Al Gore on Y2K

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Last Revised: 21st December 1999
              Fixed RHSA number in the title.
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