Buffer overflow in mars_nwe

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              AUSCERT External Security Bulletin Redistribution
                             
                      ESB-1999.142 -- RHSA-1999:037-01
                         Buffer overflow in mars_nwe
                              14 September 1999

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Red Hat, Inc. has released the following advisory concerning several buffer
overflow vulnerabilities in the mars_nwe package.  As this package runs as
root, these vulnerabilities may be leveraged by local users to gain root
access.  Exploit information involving these vulnerabilities has been made
available.

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		   Red Hat, Inc. Security Advisory

Synopsis:		Buffer overflow in mars_nwe
Advisory ID:		RHSA-1999:037-01
Issue date:		1999-09-13
Updated on:		
Keywords:		mars_nwe buffer
Cross references:	
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1. Topic:

There are several buffer overruns in the mars_nwe package.

2. Bug IDs fixed (http://developer.redhat.com/bugzilla for more info):

5002

3. Relevant releases/architectures:

Red Hat Linux 6.0, all architectures
Red Hat Linux 4.2, 5.2 Intel
(mars_nwe was not built for Alpha and Sparc in previous
versions of Red Hat Linux.)

4. Obsoleted by:

5. Conflicts with:

6. RPMs required:

Red Hat Linux 4.2:

Intel:
  ftp://updates.redhat.com//4.2/i386/mars-nwe-0.99pl17-0.4.2.i386.rpm

Source packages:
  ftp://updates.redhat.com//4.2/SRPMS/mars-nwe-0.99pl17-0.4.2.src.rpm

Red Hat Linux 5.2:

Intel:
  ftp://updates.redhat.com//5.2/i386/mars-nwe-0.99pl17-0.5.2.i386.rpm

Source packages:
  ftp://updates.redhat.com//5.2/SRPMS/mars-nwe-0.99pl17-0.5.2.src.rpm

Red Hat Linux 6.0:

Intel:
  ftp://updates.redhat.com//6.0/i386/mars-nwe-0.99pl17-4.i386.rpm

Alpha:
  ftp://updates.redhat.com//6.0/alpha/mars-nwe-0.99pl17-4.alpha.rpm

Sparc:
  ftp://updates.redhat.com//6.0/sparc/mars-nwe-0.99pl17-4.sparc.rpm

Source packages:
  ftp://updates.redhat.com//6.0/SRPMS/mars-nwe-0.99pl17-4.src.rpm

7. Problem description:

Buffer overflows are present in the mars_nwe package. Since
the code that contains these overflows is run as root, a
local root compromise is possible if users create carefully
designed directories and/or bindery objects.

A sample exploit has been made available.

Thanks go to Przemyslaw Frasunek (secure@freebsdf.lublin.pl)
and Babcia Padlina Ltd. for noting the problem and providing
a patch.

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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350882fd246344891f04d7419561eb8f  i386/mars-nwe-0.99pl17-0.4.2.i386.rpm
99134c2f507c906483320b9748b6334c  SRPMS/mars-nwe-0.99pl17-0.4.2.src.rpm

2dd6f7cf55f8ed68ba40b9d98a91adaf  i386/mars-nwe-0.99pl17-0.5.2.i386.rpm
e3d918c4e52ef051d169d7380e4d8cfe  SRPMS/mars-nwe-0.99pl17-0.5.2.src.rpm

adbd809d9de3d22fed637bcf56ede66f  i386/mars-nwe-0.99pl17-4.i386.rpm
729f888a3c1ebb87bcf04c204bf7b9dc  alpha/mars-nwe-0.99pl17-4.alpha.rpm
bf73f67c225c2edce4d7ee52b5796803  sparc/mars-nwe-0.99pl17-4.sparc.rpm
b9c61129b2e04d25c48863ededc35568  SRPMS/mars-nwe-0.99pl17-4.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:

Bugtraq ID: 617
<19990830200449.54656.qmail@lagoon.FreeBSD.lublin.pl>

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