Updated xchat packages fix "/dns" vulnerability

A security vulnerability in XChat allows a malicious server to execute
arbitrary commands.

[Updated 11 July 2003]
Added packages for Red Hat Linux on IBM iSeries and pSeries systems.

XChat is a popular cross-platform IRC client.

Versions of XChat prior to 1.8.9 do not filter the response from an IRC
server when a "/dns" query is executed. Because XChat resolves hostnames by
passing the configured resolver and hostname to a shell, an IRC server may
return a maliciously formatted response that executes arbitrary commands
with the privileges of the user running XChat.

All users of XChat are advised to update to these errata packages
containing XChat version 1.8.9, which is not vulnerable to this issue.

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.

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0382
http://online.securityfocus.com/bid/4376/info/

dns, vulnerability, xchat