(Red Hat Issues Fix) Pine E-mail Client Allows Remote Users to Send Malicious URLs Within a Message That Will Execute Arbitrary Shell Commands on the Recipient's Host When the URL is Loaded


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                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated pine packages are available
Advisory ID:       RHSA-2002:009-06
Issue date:        2002-01-10
Updated on:        2002-01-14
Product:           Red Hat Linux
Keywords:          pine url vulnerability
Cross references:  
Obsoletes:         RHSA-2001:042
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1. Topic:

Pine (version 4.43 and earlier) as released with all currently
supported versions of Red Hat Linux (6.2, 7, 7.1, 7.2), contains a URL
handling bug. This bug can allow a malicious attacker to cause arbitrary
commands embedded in a URL to be executed on the users system upon
attempting to view the URL.

2. Relevant releases/architectures:

Red Hat Linux 6.2 - alpha, i386, sparc

Red Hat Linux 7.0 - alpha, i386

Red Hat Linux 7.1 - alpha, i386, ia64

Red Hat Linux 7.2 - i386, ia64

3. Problem description:

The purpose of this release is to fix a security bug with the
treatment of quotes in the URL-handling code. The bug allows a
malicious sender to embed commands in a URL. This bug is present
in all versions of UNIX Pine 4.43 or earlier.

Example: A URL constructed as:

http://www.somewhere.com/'&touch${IFS}/tmp/foo${IFS}/tmp/bar'

would cause the files /tmp/foo and /tmp/bar to be created on the
user's machine if the URL is viewed.

Thanks to zen-parse for discovering and reporting this problem.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2002-0014 to this issue.

All users of Pine are urged to upgrade to this erratum release.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains
the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

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



6. RPMs required:

Red Hat Linux 6.2:

SRPMS:
ftp://updates.redhat.com/6.2/en/os/SRPMS/pine-4.44-1.62.0.src.rpm

alpha:
ftp://updates.redhat.com/6.2/en/os/alpha/pine-4.44-1.62.0.alpha.rpm

i386:
ftp://updates.redhat.com/6.2/en/os/i386/pine-4.44-1.62.0.i386.rpm

sparc:
ftp://updates.redhat.com/6.2/en/os/sparc/pine-4.44-1.62.0.sparc.rpm

Red Hat Linux 7.0:

SRPMS:
ftp://updates.redhat.com/7.0/en/os/SRPMS/pine-4.44-1.70.0.src.rpm

alpha:
ftp://updates.redhat.com/7.0/en/os/alpha/pine-4.44-1.70.0.alpha.rpm

i386:
ftp://updates.redhat.com/7.0/en/os/i386/pine-4.44-1.70.0.i386.rpm

Red Hat Linux 7.1:

SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/pine-4.44-1.71.0.src.rpm

alpha:
ftp://updates.redhat.com/7.1/en/os/alpha/pine-4.44-1.71.0.alpha.rpm

i386:
ftp://updates.redhat.com/7.1/en/os/i386/pine-4.44-1.71.0.i386.rpm

ia64:
ftp://updates.redhat.com/7.1/en/os/ia64/pine-4.44-1.71.0.ia64.rpm

Red Hat Linux 7.2:

SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/pine-4.44-1.72.0.src.rpm

i386:
ftp://updates.redhat.com/7.2/en/os/i386/pine-4.44-1.72.0.i386.rpm

ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/pine-4.44-1.72.0.ia64.rpm



7. Verification:

MD5 sum                          Package Name
--------------------------------------------------------------------------
38d74c9ded06b9fa9a658bb824df1cf9 6.2/en/os/SRPMS/pine-4.44-1.62.0.src.rpm
36fc86f10a4035248fa78b78e6112611 6.2/en/os/alpha/pine-4.44-1.62.0.alpha.rpm
48d8bd73b783e03b9dd00cb72452837e 6.2/en/os/i386/pine-4.44-1.62.0.i386.rpm
4237f4efd8c54eb9da4bda57bc593527 6.2/en/os/sparc/pine-4.44-1.62.0.sparc.rpm
3107591d48fbfc295592f6149402c4b7 7.0/en/os/SRPMS/pine-4.44-1.70.0.src.rpm
996dc3e3e34b65a7b7346e1d7a19e02c 7.0/en/os/alpha/pine-4.44-1.70.0.alpha.rpm
f719250bc6bcdde0cb38d10360a10e7d 7.0/en/os/i386/pine-4.44-1.70.0.i386.rpm
05dfaf528c63c5e7b54b494d273732a8 7.1/en/os/SRPMS/pine-4.44-1.71.0.src.rpm
0a4e1763877ed1e7cedb40dd9fd61658 7.1/en/os/alpha/pine-4.44-1.71.0.alpha.rpm
5ce45ce475b2d5b2a7499af5b5447ae5 7.1/en/os/i386/pine-4.44-1.71.0.i386.rpm
abebd7f2b465955c38d11a5321b2e882 7.1/en/os/ia64/pine-4.44-1.71.0.ia64.rpm
8582de73eb94e6f1c4581fd76b8f1dfd 7.2/en/os/SRPMS/pine-4.44-1.72.0.src.rpm
b9d697321f317895f6d96bf7f73db187 7.2/en/os/i386/pine-4.44-1.72.0.i386.rpm
b42b41734a7c15a64deb820b1353ac06 7.2/en/os/ia64/pine-4.44-1.72.0.ia64.rpm
 

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at:
    http://www.redhat.com/about/contact/pgpkey.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 --nogpg <filename>

8. References:

http://www.washington.edu/pine/pine-info/2002.01/msg00042.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0014


Copyright(c) 2000, 2001, 2002 Red Hat, Inc.



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