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Fedora Legacy Update Advisory
Synopsis: Updated wu-ftpd resolves security vulnerabilities
Advisory ID: FLSA:1376
Issue date: 2004-07-19
Product: Red Hat Linux
Keywords: Security
Cross references: https://bugzilla.fedora.us/show_bug.cgi?id=1376
CVE Names: CAN-1999-0997 CAN-2004-0148 CAN-2004-0185
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1. Topic:
Updated wu-ftpd packages that fixes multiple vulnerabilities are now
available.
2. Relevent releases/architectures:
Red Hat Linux 7.3 - i386
3. Problem description:
The wu-ftpd package contains the Washington University FTP (File Transfer
Protocol) server daemon. FTP is a method of transferring files between
machines.
Glenn Stewart discovered a flaw in wu-ftpd. When configured with
"restricted-gid home", an authorized user could use this flaw to
circumvent the configured home directory restriction by using chmod. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CAN-2004-0148 to this issue.
Michael Hendrickx found a flaw in the S/Key login handling. On servers
using S/Key authentication, a remote attacker could overflow a buffer and
potentially execute arbitrary code. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2004-0185 to
this issue.
wu-ftp with FTP conversion enabled allows an attacker to execute commands
via a malformed file name that is interpreted as an argument to the
program that does the conversion, e.g. tar or uncompress. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the
name CVE-1999-0997 to this issue.
All users are advised to upgrade to these updated packages, which contain a
backported fix and are not vulnerable to this issue.
Fedora Legacy would like to thank John Dalbec for reporting 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:
http://bugzilla.fedora.us - 1376 - wu-ftpd CAN-2004-0148, CAN-2004-0185
6. RPMs required:
Red Hat Linux 7.3:
SRPM:
http://download.fedoralegacy.org/redhat/7.3/updates/SRPMS/wu-ftpd-2.6.2-15.7x.legacy.src.rpm
i386:
http://download.fedoralegacy.org/redhat/7.3/updates/i386/wu-ftpd-2.6.2-15.7x.legacy.i386.rpm
7. Verification:
SHA1 sum Package Name
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5b50aa3a91d8bb30aa860ac05ca7b2ea60f91c05
7.3/updates/SRPMS/wu-ftpd-2.6.2-15.7x.legacy.src.rpm
6215a42cadf71683e87a4b7ffa54fd7b37d106a9
7.3/updates/i386/wu-ftpd-2.6.2-15.7x.legacy.i386.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.cgi?name=CAN-1999-0997
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0148
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0185
http://rhn.redhat.com/errata/RHSA-2004-096.html
9. Contact:
The Fedora Legacy security contact is <secnotice@xxxxxxxxxxxxxxxx>. More
project details at http://www.fedoralegacy.org
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Jesse Keating RHCE (http://geek.j2solutions.net)
Fedora Legacy Team (http://www.fedoralegacy.org)
GPG Public Key (http://geek.j2solutions.net/jkeating.j2solutions.pub)
Was I helpful? Let others know:
http://svcs.affero.net/rm.php?r=jkeating
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