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Date: Mon, 24 Nov 2003 03:40 -0500
Subject: [RHSA-2003:316-01] Updated iproute packages fix local security vulnerability

Hash: SHA1

- ---------------------------------------------------------------------
                   Red Hat Security Advisory

Synopsis:          Updated iproute packages fix local security vulnerability
Advisory ID:       RHSA-2003:316-01
Issue date:        2003-11-24
Updated on:        2003-11-24
Product:           Red Hat Linux
Keywords:          DoS
Cross references:  
CVE Names:         CAN-2003-0856
- ---------------------------------------------------------------------

1. Topic:

Updated iproute packages that close a locally-exploitable denial of service
vulnerability are now available.

2. Relevant releases/architectures:

Red Hat Linux 7.1 - i386
Red Hat Linux 7.1 for iSeries (64 bit) - ppc
Red Hat Linux 7.1 for pSeries (64 bit) - ppc
Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386
Red Hat Linux 8.0 - i386
Red Hat Linux 9 - i386

3. Problem description:

The iproute package contains advanced IP routing and network device
configuration tools.

Herbert Xu reported that iproute can accept spoofed messages sent on the
kernel netlink interface by other users on the local machine.  This could
lead to a local denial of service attack.  The Common Vulnerabilities and
Exposures project ( has assigned the name CAN-2003-0856 to
this issue. 
Users of iproute should upgrade to these erratum packages, which contain a
patch that checks that netlink messages actually came from the kernel.

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:


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

If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the
up2date client with an updated certificate.  The latest version of
up2date is available from the Red Hat FTP site and may also be
downloaded directly from the RHN website:

5. RPMs required:

Red Hat Linux 7.1:



Red Hat Linux 7.1 for iSeries (64 bit):



Red Hat Linux 7.1 for pSeries (64 bit):



Red Hat Linux 7.2:




Red Hat Linux 7.3:



Red Hat Linux 8.0:



Red Hat Linux 9:



6. Verification:

MD5 sum                          Package Name
- --------------------------------------------------------------------------
2f1ea42cdf30113141f10538e2179beb 7.1/en/os/SRPMS/iproute-2.4.7-7.71.1.src.rpm
18b11d4c092ec8f32c90d6c46eff0e5e 7.1/en/os/i386/iproute-2.4.7-7.71.1.i386.rpm
d610fcf135659a40e1cace634e706aef 7.1/en/os/iSeries/SRPMS/iproute-2.4.7-7.71ppc.1.src.rpm
10517e763dc7e25a93664fce504e1d0a 7.1/en/os/iSeries/ppc/iproute-2.4.7-7.71ppc.1.ppc.rpm
d610fcf135659a40e1cace634e706aef 7.1/en/os/pSeries/SRPMS/iproute-2.4.7-7.71ppc.1.src.rpm
10517e763dc7e25a93664fce504e1d0a 7.1/en/os/pSeries/ppc/iproute-2.4.7-7.71ppc.1.ppc.rpm
3d7a9f23eb56e24012f0a2cfd4c4e403 7.2/en/os/SRPMS/iproute-2.4.7-7.72.1.src.rpm
90f4960d5e9013bfbe678ff4286bc17f 7.2/en/os/i386/iproute-2.4.7-7.72.1.i386.rpm
86f3216474f4effa7364b75da360b153 7.2/en/os/ia64/iproute-2.4.7-7.72.1.ia64.rpm
7e95bd6212c96d20b25a8c761dd2c749 7.3/en/os/SRPMS/iproute-2.4.7-7.73.1.src.rpm
e05fc87d3047905d89850dd705e2f641 7.3/en/os/i386/iproute-2.4.7-7.73.1.i386.rpm
22ca841ec539d36b14ba8f3b8c82f78c 8.0/en/os/SRPMS/iproute-2.4.7-7.80.1.src.rpm
f0075b7a8250003ff06d50bec81627a3 8.0/en/os/i386/iproute-2.4.7-7.80.1.i386.rpm
f373608f9f55848c2592c13e594319d3 9/en/os/SRPMS/iproute-2.4.7-7.90.1.src.rpm
ffaab09f8adbc38e67a009c5a7780b45 9/en/os/i386/iproute-2.4.7-7.90.1.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key is
available from

You can verify each package with the following command:
    rpm --checksig -v <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:
    md5sum <filename>

7. References:

8. Contact:

The Red Hat security contact is <>.  More contact
details at

Copyright 2003 Red Hat, Inc.
Version: GnuPG v1.0.7 (GNU/Linux)


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