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                   Red Hat, Inc. Security Advisory

Synopsis:          New majordomo packages available
Advisory ID:       RHSA-2000:005-05
Issue date:        2000-01-20
Updated on:        2000-05-31
Product:           Red Hat Powertools
Keywords:          majordomo
Cross references:  N/A
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1. Topic:

New majordomo packages are available to fix local security problems in
 majordomo.

2. Relevant releases/architectures:

Red Hat Powertools 6.1 - i386 alpha sparc

3. Problem description:

A vulnerability in /usr/lib/majordomo/resend and /usr/lib/majordomo/wrapper
will allow execution of arbitrary commands with elevated privileges.

It is recommended that all users of Red Hat Linux using the majordomo
package upgrade to the fixed package, which will resolve the 
vulnerability in /usr/lib/majordomo/resend.  To secure
 /usr/lib/majodomo/wrapper, please read the solution section below.

Once an official patch has been released by the majordomo maintainers, 
we will release an updated package which will fix both vulnerabilities.

4. Solution:

For each RPM for your particular architecture, run:

rpm -Fvh [filename]

where filename is the name of the RPM.

Once the package is installed, become "root" and execute this command:

chmod o-x /usr/lib/majordomo/wrapper

5. Bug IDs fixed (http://bugzilla.Red Hat.com/bugzilla for more info):

N/A

6. RPMs required:

Red Hat Powertools 6.1:

intel:
ftp://ftp.Red Hat.com/Red Hat/updates/powertools/6.1/i386/majordomo-1.94.5-2.i386.rpm

alpha:
ftp://ftp.Red Hat.com/Red Hat/updates/powertools/6.1/alpha/majordomo-1.94.5-2.alpha.rpm

sparc:
ftp://ftp.Red Hat.com/Red Hat/updates/powertools/6.1/sparc/majordomo-1.94.5-2.sparc.rpm

sources:
ftp://ftp.Red Hat.com/Red Hat/updates/powertools/6.1/SRPMS/majordomo-1.94.5-2.src.rpm

7. Verification:

MD5 sum                           Package Name
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ad994a1742d90a593b8ecfbf52634cd7  6.1/SRPMS/majordomo-1.94.5-2.src.rpm
8c829a13c2229060c899ffdc7e7db38c  6.1/alpha/majordomo-1.94.5-2.alpha.rpm
f0e22f364abcbe4c217f2b8eb180037d  6.1/i386/majordomo-1.94.5-2.i386.rpm
89e327c6c92acc97db34e541f34c0c67  6.1/sparc/majordomo-1.94.5-2.sparc.rpm

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
    http://www.Red Hat.com/corp/contact.html

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 to Brock Tellier at btellier@USA.NET for noting the vulnerability in 
resend, to Shevek at shevek@anarres.org and Olaf Kirch at okir@monad.swb.de for 
noting the vulnerability in the wrapper.