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Linux-Mandrake Security Update Advisory: xchat update

Aug 30, 2000, 20:06 (0 Talkback[s])

Date: Tue, 29 Aug 2000 09:45:37 -0600
From: Linux Mandrake Security Team
Subject: MDKSA-2000:039-1 - xchat update

                Linux-Mandrake Security Update Advisory

Package name:           xchat
Date:                   August 28th, 2000
Original Advisory Date: August 24th, 2000
Advisory ID:            MDKSA-2000:039-1

Affected versions:      7.0, 7.1

Problem Description:

XChat 1.3.9 and later allow users to right-click on a URL appearing in an IRC discussion and select the "Open in Browser" option. To open the URL in a browser, XChat passes the command to /bin/sh. This allows a malicious URL the ability to execute arbitrary shell commands as the user that is running XChat. This update changes the functionality of XChat to bypass the shell and execute the browser directly. Thanks go to Red Hat for providing the patch.


XChat 1.2.1 is vulnerable as well, so an update for 7.0 is now available.

Please verify these md5 checksums of the updates prior to upgrading to ensure the integrity of the downloaded package. You can do this by running the md5sum program on the downloaded package by using "md5sum package.rpm".

Linux-Mandrake 7.0:
ebf0d4a0d236453f63a797ea20f0758b 7.0/RPMS/xchat-1.4.1-4mdk.i586.rpm
d695396fb97a55c6c7e2cdbb22079c00 7.0/SRPMS/xchat-1.4.1-4mdk.src.rpm

Linux-Mandrake 7.1:
ebf0d4a0d236453f63a797ea20f0758b 7.1/RPMS/xchat-1.4.1-4mdk.i586.rpm
d695396fb97a55c6c7e2cdbb22079c00 7.1/SRPMS/xchat-1.4.1-4mdk.src.rpm

To upgrade automatically, use « MandrakeUpdate ».

If you want to upgrade manually, download the updated package from one of our FTP server mirrors and uprade with "rpm -Uvh package_name".

You can download the updates directly from:

Or try one of the other mirrors listed at:

Updated packages are available in the "updates/[ver]/RPMS/" directory. For example, if you are looking for an updated RPM package for Linux-Mandrake 7.1, look for it in "updates/7.1/RPMS/". Updated source RPMs are available as well, but you generally do not need to download them.

Please be aware that sometimes it takes the mirrors a few hours to update, so if you want an immediate upgrade, please use one of the two above-listed mirrors.

You can view other security advisories for Linux-Mandrake at:

If you want to report vulnerabilities, please contact

Linux-Mandrake has two security-related mailing list services that anyone can subscribe to:

Linux-Mandrake's security announcements mailing list. Only announcements are sent to this list and it is read-only.

Linux-Mandrake's security discussion mailing list. This list is open to anyone to discuss Linux-Mandrake security specifically and Linux security in general.

To subscribe to either list, send a message to with "subscribe [listname]" in the body of the message.

To remove yourself from either list, send a message to with "unsubscribe [listname]" in the body of the message.

To get more information on either list, send a message to with "info [listname]" in the body of the message.

Optionally, you can use the web interface to subscribe to or unsubscribe from either list: