Red Hat alert: Updated fileutils package fixes race condition in recursive operations

---------------------------------------------------------------------
                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated fileutils package fixes race condition in recursive operations
Advisory ID:       RHSA-2003:015-05
Issue date:        2003-01-21
Updated on:        2003-02-12
Product:           Red Hat Linux
Keywords:          rm move gnu mv remove
Cross references:  
Obsoletes:         
CVE Names:         CAN-2002-0435
---------------------------------------------------------------------

1. Topic:

New fileutils packages for Red Hat Linux 6.2, 7.0, 7.1, 7.2 and 7.3 fix a
race condition in recursive remove and move commands.

2. Relevant releases/architectures:

Red Hat Linux 6.2 - i386
Red Hat Linux 7.0 - i386
Red Hat Linux 7.1 - i386
Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386

3. Problem description:

The fileutils package includes a number of GNU versions of common and
popular file management utilities.

A race condition in the recursive use of 'rm' and 'mv' in fileutils 4.1 and
earlier could allow local users to delete files and directories (as the user
running fileutils) if the user has write access to part of the tree being
moved or deleted.

Red Hat Linux versions 6.2, 7, 7.1, 7.2, and 7.3 shipped with versions of
fileutils that are vulnerable to this issue.  This erratum provides new
fileutils packages that contain a patch correcting this issue.

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. RPMs required:

Red Hat Linux 6.2:

SRPMS:
ftp://updates.redhat.com/6.2/en/os/SRPMS/fileutils-4.0-21.1.src.rpm

i386:
ftp://updates.redhat.com/6.2/en/os/i386/fileutils-4.0-21.1.i386.rpm

Red Hat Linux 7.0:

SRPMS:
ftp://updates.redhat.com/7.0/en/os/SRPMS/fileutils-4.0x-3.1.src.rpm

i386:
ftp://updates.redhat.com/7.0/en/os/i386/fileutils-4.0x-3.1.i386.rpm

Red Hat Linux 7.1:

SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/fileutils-4.0.36-4.1.src.rpm

i386:
ftp://updates.redhat.com/7.1/en/os/i386/fileutils-4.0.36-4.1.i386.rpm

Red Hat Linux 7.2:

SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/fileutils-4.1-10.1.src.rpm

i386:
ftp://updates.redhat.com/7.2/en/os/i386/fileutils-4.1-10.1.i386.rpm

ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/fileutils-4.1-10.1.ia64.rpm

Red Hat Linux 7.3:

SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/fileutils-4.1-10.1.src.rpm

i386:
ftp://updates.redhat.com/7.3/en/os/i386/fileutils-4.1-10.1.i386.rpm



6. Verification:

MD5 sum                          Package Name
--------------------------------------------------------------------------
55639c22a29023720b9504fda5c8614e 6.2/en/os/SRPMS/fileutils-4.0-21.1.src.rpm
cacc930476d0338f406ecead3dcf952b 6.2/en/os/i386/fileutils-4.0-21.1.i386.rpm
7c7f227ab74bde72f3412107ba63ba62 7.0/en/os/SRPMS/fileutils-4.0x-3.1.src.rpm
37887ea82f67399490cf04f30727078f 7.0/en/os/i386/fileutils-4.0x-3.1.i386.rpm
fe03cd0ec3fc7a0cd6f22872704c4390 7.1/en/os/SRPMS/fileutils-4.0.36-4.1.src.rpm
24bcfd92b6298dc3510a4cbfdf812a96 7.1/en/os/i386/fileutils-4.0.36-4.1.i386.rpm
4357c82173c6ad064119cdf265f6162e 7.2/en/os/SRPMS/fileutils-4.1-10.1.src.rpm
d8a014f87a6aa623c36620ba96178698 7.2/en/os/i386/fileutils-4.1-10.1.i386.rpm
3c7c5fd690854ba5655717583883ddc5 7.2/en/os/ia64/fileutils-4.1-10.1.ia64.rpm
4357c82173c6ad064119cdf265f6162e 7.3/en/os/SRPMS/fileutils-4.1-10.1.src.rpm
d8a014f87a6aa623c36620ba96178698 7.3/en/os/i386/fileutils-4.1-10.1.i386.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 -v 

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    
    md5sum 


7. References:

http://online.securityfocus.com/archive/1/260936
http://mail.gnu.org/archive/html/bug-fileutils/2002-03/msg00028.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0435

8. Contact:

The Red Hat security contact is .  More contact
details at http://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.