Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2002.227 -- RHSA-2002:081-06
perl-Digest-MD5 UTF8 bug results in incorrect MD5 sums
13 May 2002
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: perl-Digest-MD5
Vendor: Red Hat
Operating System: Red Hat Linux 7.3
Platform: i386
Impact: Reduced Security
- --------------------------BEGIN INCLUDED TEXT--------------------
- ---------------------------------------------------------------------
Red Hat, Inc. Red Hat Security Advisory
Synopsis: perl-Digest-MD5 UTF8 bug results in incorrect MD5 sums
Advisory ID: RHSA-2002:081-06
Issue date: 2002-05-06
Updated on: 2002-05-10
Product: Red Hat Linux
Keywords:
Cross references:
Obsoletes:
- ---------------------------------------------------------------------
1. Topic:
Updated perl-Digest-MD5 packages are available which work around a bug in
the utf8 interaction between perl-Digest-MD5 and Perl.
2. Relevant releases/architectures:
Red Hat Linux 7.3 - i386
3. Problem description:
A bug in utf8 interaction between perl-Digest-MD5 and Perl results in utf8
strings having improper MD5 digests. This update works around the problem
and provides correct checksums for all input.
To determine if a machine is vulnerable, run the following command at a
shell prompt:
perl -le 'use Digest::MD5 qw/md5_hex/; $s = "testx{101}"; chop $s; print
(md5_hex($s) eq md5_hex("test") ? "ok" : "not ok")'
If the output is any message other than "ok" then an upgrade is
recommended. All 7.3 systems are vulnerable; no earlier versions should
have 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. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
6. RPMs required:
Red Hat Linux 7.3:
SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/perl-Digest-MD5-2.20-1.src.rpm
i386:
ftp://updates.redhat.com/7.3/en/os/i386/perl-Digest-MD5-2.20-1.i386.rpm
7. Verification:
MD5 sum Package Name
- --------------------------------------------------------------------------
19f256d961bdd48a3986b113d48aa07e 7.3/en/os/SRPMS/perl-Digest-MD5-2.20-1.src.rpm
eadfe2a31835a906d895752f61fb533e 7.3/en/os/i386/perl-Digest-MD5-2.20-1.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 <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:
rpm --checksig --nogpg <filename>
8. References:
Copyright(c) 2000, 2001, 2002 Red Hat, Inc.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to use any or all of this information is
the responsibility of each user or organisation, and should be done so in
accordance with site policies and procedures.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the original authors to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/Information/advisories.html
If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for emergencies.
-----BEGIN PGP SIGNATURE-----
Version: 2.6.3i
Charset: noconv
Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key
iQCVAwUBPN/XAyh9+71yA2DNAQH+0gP/fZBLgUh+/q6oreTyEsdFudDZ3nJqnFJq
9CwLaRZ64sIo5C4HLYqSQVilQDauFGTVnEn+dEmXJANIT3FyQHehv8BFXLgs7M1X
I9oimlKp3H8Opim3E492SR7pk3VpxRvWR5mCRHXPsjzBRe/SBnY70k62WMr1FAG2
/imJ4RzneO4=
=comu
-----END PGP SIGNATURE-----