SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (Instant Messaging/IRC/Chat)  >   Xchat Vendors:   Zelezny, Peter
(Red Hat Issues Fix for RH Linux) XChat Socks-5 Proxy Buffer Overflow Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1009993
SecurityTracker URL:  http://securitytracker.com/id/1009993
CVE Reference:   CVE-2004-0409   (Links to External Site)
Date:  Apr 30 2004
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.8.0 to 2.0.8
Description:   A stack overflow vulnerability was reported in XChat in the Socks-5 proxy code. A remote user can execute arbitrary code on the target system in certain cases.

The vendor reported that if socks5 traversal is enabled (not the default configuration), then a remote user with a malicious proxy server can trigger the overflow when the target user connects to the malicious proxy server. Arbitrary code can be executed on the target user's system with the privileges of the user running the xchat process.

The vendor credits tsifra with discovering this bug.

Impact:   A remote user can cause arbitrary code to be executed on a target user's system when the target user connects to a malicious proxy server.
Solution:   Red Hat has released a fix.

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


The verification checksums are:

MD5 sum Package Name

e865d8d7298e2ca3390fb76a0bc2ab25 9/en/os/SRPMS/xchat-1.8.11-9.src.rpm
353021ecb079ce234b4a1443b807e9b0 9/en/os/i386/xchat-1.8.11-9.i386.rpm

Vendor URL:  xchat.org/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Linux)
Underlying OS Comments:  9

Message History:   This archive entry is a follow-up to the message listed below.
Apr 19 2004 XChat Socks-5 Proxy Buffer Overflow Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2004:177-01] An updated X-Chat package fixes vulnerability in


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- ---------------------------------------------------------------------
                   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
- ---------------------------------------------------------------------

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
- --------------------------------------------------------------------------

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.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.7 (GNU/Linux)

iD8DBQFAkf7xXlSAg2UNWIIRAhIyAJ99IYkoi4LxmFizNxbMY5+pDq46jACfYaD2
Hvg6aq3VrsdpvNc+bLlU5CY=
=Anyf
-----END PGP SIGNATURE-----


_______________________________________________
Redhat-watch-list mailing list
To unsubscribe, visit: https://www.redhat.com/mailman/listinfo/redhat-watch-list

 
 


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2021, SecurityGlobal.net LLC