[FLSA-2005:152794] Updated rp-pppoe package fixes security issue

[Marc Deslauriers]

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Fedora Legacy Update Advisory

Synopsis: Updated rp-pppoe package fixes security issue
Advisory ID: FLSA:152794
Issue date: 2005-11-14
Product: Red Hat Linux, Fedora Core
Keywords: Bugfix
CVE Names: CVE-2004-0564
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1. Topic:

An updated rp-pppoe package that fixes a security vulnerability is now
available.

The rp-pppoe package is a PPP over Ethernet client (for xDSL support).

2. Relevant releases/architectures:

Red Hat Linux 7.3 - i386
Red Hat Linux 9 - i386
Fedora Core 1 - i386

3. Problem description:

Max Vozeler discovered a vulnerability in pppoe, the PPP over Ethernet
driver from Roaring Penguin. When the program is running setuid root
(which is not the case in a default Red Hat Linux or Fedora Core
installation), an attacker could overwrite any file on the file system.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CVE-2004-0564 to this issue.

All users of rp-pppoe should upgrade to this updated package, which
resolves 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 yum and apt. Many
people find this an easier way to apply updates. To use yum issue:

yum update

or to use apt:

apt-get update; apt-get upgrade

This will start an interactive process that will result in the
appropriate RPMs being upgraded on your system. This assumes that you
have yum or apt-get configured for obtaining Fedora Legacy content.
Please visit http://www.fedoralegacy.org/docs for directions on how to
configure yum and apt-get.

5. Bug IDs fixed:

https://bugzilla.redhat.com/bugzilla....cgi?id=152794

6. RPMs required:

Red Hat Linux 7.3:
SRPM:
http://download.fedoralegacy.org/red...legacy.src.rpm

i386:
http://download.fedoralegacy.org/red...egacy.i386.rpm

Red Hat Linux 9:

SRPM:
http://download.fedoralegacy.org/red...legacy.src.rpm

i386:
http://download.fedoralegacy.org/red...egacy.i386.rpm

Fedora Core 1:

SRPM:
http://download.fedoralegacy.org/fed...legacy.src.rpm

i386:
http://download.fedoralegacy.org/fed...egacy.i386.rpm


7. Verification:

SHA1 sum Package Name
---------------------------------------------------------------------

3f7646466059606af82392573647db2757a07184
redhat/7.3/updates/i386/rp-pppoe-3.3-10.legacy.i386.rpm
0c9fdb6d3ad087cdedef83dc564ae1b21d8f5bab
redhat/7.3/updates/SRPMS/rp-pppoe-3.3-10.legacy.src.rpm
dda91513cd724e0175550465b19c8fab00876f9a
redhat/9/updates/i386/rp-pppoe-3.5-2.2.legacy.i386.rpm
a5806f7bbcb5cd62f33a9b36904d08548da976b8
redhat/9/updates/SRPMS/rp-pppoe-3.5-2.2.legacy.src.rpm
8f808a8239aeebf880c9b9b894531dd26db849a9
fedora/1/updates/i386/rp-pppoe-3.5-8.2.legacy.i386.rpm
ef55f4b9380d5551129f806ae76ba548bfb7bdb4
fedora/1/updates/SRPMS/rp-pppoe-3.5-8.2.legacy.src.rpm

These packages are GPG signed by Fedora Legacy for security. Our key is
available from http://www.fedoralegacy.org/about/security.php

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 sha1sum with the following command:

sha1sum <filename>

8. References:

http://cve.mitre.org/cgi-bin/cvename...=CVE-2004-0564

9. Contact:

The Fedora Legacy security contact is <secnotice@fedoralegacy.org>. More
project details at http://www.fedoralegacy.org

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[David F. Skoll]

Marc Deslauriers wrote:

> Synopsis: Updated rp-pppoe package fixes security issue
> Advisory ID: FLSA:152794

This is a totally bogus vulnerability, as I wrote in my response on
http://cve.mitre.org/cgi-bin/cvename...=CVE-2004-0564

In fact, this so-called "fix" might tempt people to run rp-pppoe SUID-root,
which is a Bad Thing, because there are probably tons of other reasons
why a SUID-root rp-pppoe is dangerous.

rp-pppoe 3.6 was released a while ago. It has a proper fix for SUID-ness.
I recommend people use that instead of distro versions with
dubious "security patches"

NOTE: I have set the return path to <devnull@roaringpenguin.com> to avoid
hundreds of responses from Bugtraq readers' broken auto-responders. To
reply to me, reply to <dfs@roaringpenguin.com>

Regards,

David.