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Red Hat Security Advisory
Synopsis: An updated X-Chat package fixes vulnerability in Socks-5 proxy
Advisory ID: RHSA-2004:177-01
Issue date: 2004-04-30
Updated on: 2004-04-30
Product: Red Hat Linux
Keywords:
Cross references:
Obsoletes:
CVE Names: CAN-2004-0409
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1. Topic:
An updated X-Chat package fixes a vulnerability which could be exploited by
a malicious Socks-5 proxy is now available.
2. Relevant releases/architectures:
Red Hat Linux 9 - i386
3. Problem description:
X-Chat is a graphical IRC chat client for the X Window System.
A stack buffer overflow flaw was found in the X-Chat's Socks-5 proxy code.
An attacker could create a malicious Socks-5 proxy server in such a way
that X-Chat would execute arbitrary code if a victim configured X-Chat to
use the proxy.
Users of X-Chat should upgrade to this updated package which contains a
backported security patch and is not vulnerable to 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.
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:
https://rhn.redhat.com/help/latest-up2date.pxt
5. RPMs required:
Red Hat Linux 9:
SRPMS:
ftp://updates.redhat.com/9/en/os/SRPMS/xchat-1.8.11-9.src.rpm
i386:
ftp://updates.redhat.com/9/en/os/i386/xchat-1.8.11-9.i386.rpm
6. Verification:
MD5 sum Package Name
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e865d8d7298e2ca3390fb76a0bc2ab25 9/en/os/SRPMS/xchat-1.8.11-9.src.rpm
353021ecb079ce234b4a1443b807e9b0 9/en/os/i386/xchat-1.8.11-9.i386.rpm
These packages are GPG signed by Red Hat for security. Our key is
available from https://www.redhat.com/security/team/key.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://mail.nl.linux.org/xchat-announce/2004-04/msg00000.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0409
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact.html
Copyright 2004 Red Hat, Inc.
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