108634 2003-07-31 20:18 /185 rader/ <bugzilla@redhat.com>
Importerad: 2003-07-31 20:18 av Brevbäraren
Extern mottagare: redhat-watch-list@redhat.com
Extern mottagare: bugtraq@securityfocus.com
Extern mottagare: full-disclosure@lists.netsys.com
Mottagare: Bugtraq (import) <5823>
Ärende: [RHSA-2003:245-01] Updated wu-ftpd packages fix remote vulnerability.
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Red Hat Security Advisory
Synopsis: Updated wu-ftpd packages fix remote vulnerability.
Advisory ID: RHSA-2003:245-01
Issue date: 2003-07-31
Updated on: 2003-07-31
Product: Red Hat Linux
Keywords: ftpd
Cross references:
Obsoletes: RHSA-2001:157
CVE Names: CAN-2003-0466
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1. Topic:
Updated wu-ftpd packages are now available that fix a remotely
exploitable security issue.
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
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 computers on a network.
An off-by-one bug has been discovered in versions of wu-ftpd up to
and including 2.6.2. On a vulnerable system, a remote attacker would
be able to exploit this bug to gain root privileges.
Red Hat Linux 7.1 and 7.2 contain a version of wu-ftpd that is
affected by this bug, although it is believed this issue will not be
remotely exploitable due to compiler padding of the buffer targeted
for the overflow.
Red Hat Linux 7.3 and 8.0 contain a version of wu-ftpd that is
remotely exploitable.
Red Hat advises all users of wu-ftpd to upgrade to these erratum
packages, which contain a security patch and is not vulnerable to
this issue.
Red Hat would like to thank Wojciech Purczynski and Janusz
Niewiadomski of ISEC Security Research for their responsible
disclosure of 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 7.1:
SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm
i386:
ftp://updates.redhat.com/7.1/en/os/i386/wu-ftpd-2.6.2-11.71.1.i386.rpm
Red Hat Linux 7.1 for iSeries (64 bit):
SRPMS:
ftp://updates.redhat.com/7.1/en/os/iSeries/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm
ppc:
ftp://updates.redhat.com/7.1/en/os/iSeries/ppc/wu-ftpd-2.6.2-11.71.1.ppc.rpm
Red Hat Linux 7.1 for pSeries (64 bit):
SRPMS:
ftp://updates.redhat.com/7.1/en/os/pSeries/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm
ppc:
ftp://updates.redhat.com/7.1/en/os/pSeries/ppc/wu-ftpd-2.6.2-11.71.1.ppc.rpm
Red Hat Linux 7.2:
SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/wu-ftpd-2.6.2-11.72.1.src.rpm
i386:
ftp://updates.redhat.com/7.2/en/os/i386/wu-ftpd-2.6.2-11.72.1.i386.rpm
ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/wu-ftpd-2.6.2-11.72.1.ia64.rpm
Red Hat Linux 7.3:
SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/wu-ftpd-2.6.2-11.73.1.src.rpm
i386:
ftp://updates.redhat.com/7.3/en/os/i386/wu-ftpd-2.6.2-11.73.1.i386.rpm
Red Hat Linux 8.0:
SRPMS:
ftp://updates.redhat.com/8.0/en/os/SRPMS/wu-ftpd-2.6.2-12.src.rpm
i386:
ftp://updates.redhat.com/8.0/en/os/i386/wu-ftpd-2.6.2-12.i386.rpm
6. Verification:
MD5 sum Package Name
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eaad5f7ffbf2399c13623da2c6ff4e83 7.1/en/os/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm
ecbd80d787844a3ab579e6058b0704c2 7.1/en/os/i386/wu-ftpd-2.6.2-11.71.1.i386.rpm
eaad5f7ffbf2399c13623da2c6ff4e83 7.1/en/os/iSeries/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm
cf9324b0e936ffb3aa7a738f26108eb6 7.1/en/os/iSeries/ppc/wu-ftpd-2.6.2-11.71.1.ppc.rpm
eaad5f7ffbf2399c13623da2c6ff4e83 7.1/en/os/pSeries/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm
cf9324b0e936ffb3aa7a738f26108eb6 7.1/en/os/pSeries/ppc/wu-ftpd-2.6.2-11.71.1.ppc.rpm
3f526a5e04806d71560c7357189c08fa 7.2/en/os/SRPMS/wu-ftpd-2.6.2-11.72.1.src.rpm
22ce902ae1255927825bec7a6cbd9a68 7.2/en/os/i386/wu-ftpd-2.6.2-11.72.1.i386.rpm
8587632893b8a74580b50cdf1a4923f6 7.2/en/os/ia64/wu-ftpd-2.6.2-11.72.1.ia64.rpm
a25b0c5c9575cfa2e18578b8ec30e7ab 7.3/en/os/SRPMS/wu-ftpd-2.6.2-11.73.1.src.rpm
3c53df7e43666c6b1dfc6b9bbbe4da06 7.3/en/os/i386/wu-ftpd-2.6.2-11.73.1.i386.rpm
dca07c4e90f308b49f8ac6b8d463536f 8.0/en/os/SRPMS/wu-ftpd-2.6.2-12.src.rpm
d7b8fc5c0f9c0938dbddcea76f8e1e22 8.0/en/os/i386/wu-ftpd-2.6.2-12.i386.rpm
These packages are GPG signed by Red Hat for security. Our key is
available from http://www.redhat.com/security/keys.html
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:
http://isec.pl/vulnerabilities/isec-0011-wu-ftpd.txt
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0466
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at http://www.redhat.com/solutions/security/news/contact.html
Copyright 2003 Red Hat, Inc.
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