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

SecurityTracker
Archives


 


Category:   Application (File Transfer/Sharing)  >   Wu-ftpd Vendors:   WU-FTPD Development Group
(Turbolinux Issues Fix) WU-FTPD File Globbing Character Bug Allows Remote Users to Obtain Root-Level Privileges on the Server
SecurityTracker Alert ID:  1003338
SecurityTracker URL:  http://securitytracker.com/id/1003338
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jan 24 2002
Impact:   Execution of arbitrary code via network, Root access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.6.1-18 and prior
Description:   Red Hat reported a vulnerability in the WU-FTPD FTP server. An error in expanding (globbing) file names may allow remote users to execute arbitrary code on the FTP server.

It is reported that a remote user with access to an FTP server account (including anonymous access) can specify a "file globbing" pattern where the server will attempt to find matching files based on the pattern. If a malformed globbing pattern is used, the remote user can trigger the vulnerability and cause the process to overwrite memory that was not properly allocated, creating a heap overwrite condition. This may allow the remote user to execute arbitrary code on the server with the privileges of the FTP server (which is typically root level privileges).

If the globbing pattern is '~{', the error can be triggered.

Impact:   A remote user with access to the FTP server, including anonymous access, can execute arbitrary code on the server with the permissions of the FTP server (which is typically root level privileges).
Solution:   The vendor has released a fix in version wu-ftpd-2.6.1-10

Update the package from the Turbolinux ftp server by running the following command:

rpm -Uvh ftp://ftp.turbolinux.com/pub/updates/6.0/security/<rpm>

Where <rpm> are the following:

wu-ftpd-2.6.1-10.i386.rpm

The source RPM can be downloaded from:

ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/wu-ftpd-2.6.1-10.src.rpm

**Note: You must rebuild and install the RPM if you choose to download
and install the SRPM. Simply installing the SRPM alone WILL NOT CLOSE
THE SECURITY HOLE.

Please verify the MD5 checksums of the updates before you install:

MD5 sum Package Name
---------------------------------------------------------------------------
370d61d7c3a74180a1532bf462a460de wu-ftpd-2.6.1-10.i386.rpm
1d259c40e1c744d72d8bb8724f9ebe47 wu-ftpd-2.6.1-10.src.rpm

Vendor URL:  www.wu-ftpd.org/ (Links to External Site)
Cause:   Boundary error, Exception handling error
Underlying OS:  Linux (Turbo Linux)

Message History:   This archive entry is a follow-up to the message listed below.
Nov 28 2001 WU-FTPD File Globbing Character Bug Allows Remote Users to Obtain Root-Level Privileges on the Server



 Source Message Contents

Subject:  [TL-Security-Announce] wu-ftpd-2.6.1.-10 TLSA2002002



--V0207lvV8h4k8FAm
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: 8bit            

___________________________________________________________________________

                        Turbolinux Security Announcement

        Package : wu-ftpd
        Vulnerable Packages: Versions previous to wu-ftpd-2.6.1-10
        Date: Wed Jan 23 12:26:21 PST 2002

        Affected Turbolinux versions: previous to wu-ftpd-2.6.1-10

        Turbolinux Advisory ID#:  TLSA2002002

   Credits: http://www.debian.org/security/2001/dsa-087
___________________________________________________________________________

A security hole was discovered in the package mentioned above.
Please update the package in your installation as soon as possible.
___________________________________________________________________________

1. Problem Summary

   CORE ST reports that an exploit has been found for a bug in the wu-ftpd 
   glob code. This is the code that handles filename wild card expansion.

2. Impact

   Any logged in user (including anonymous FTP users) can exploit the bug to 
   gain root privileges on the server.

3. Solution

  This has been  corrected in version  wu-ftpd-2.6.1-10

  Update the package from our ftp server by running the following command:

  rpm -Uvh ftp://ftp.turbolinux.com/pub/updates/6.0/security/<rpm>

  Where <rpm> are the following:

  wu-ftpd-2.6.1-10.i386.rpm

  The source RPM can be downloaded from:

  ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/wu-ftpd-2.6.1-10.src.rpm

  **Note: You must rebuild and install the RPM if you choose to download
  and install the SRPM.  Simply installing the SRPM alone WILL NOT CLOSE
  THE SECURITY HOLE.

 Please verify the MD5 checksums of the updates before you install:

  MD5 sum                               Package Name
---------------------------------------------------------------------------
  370d61d7c3a74180a1532bf462a460de  wu-ftpd-2.6.1-10.i386.rpm
  1d259c40e1c744d72d8bb8724f9ebe47  wu-ftpd-2.6.1-10.src.rpm
___________________________________________________________________________

These packages are GPG signed by Turbolinux for security. Our key
is available here:

 http://www.turbolinux.com/security/tlgpgkey2002-01-09.asc

To verify a package, use the following command:

 rpm --checksig name_of_rpm

To examine only the md5sum, use the following command:

 rpm --checksig --nogpg name_of_rpm

**Note: Checking GPG keys requires RPM 3.0 or higher.

___________________________________________________________________________
You can find more updates on our ftp server:

   ftp://ftp.turbolinux.com/pub/updates/6.0/security/ for TL6.0 Workstation
   and Server security updates
   ftp://ftp.turbolinux.com/pub/updates/7.0/security/ for TL7.0 Workstation
   and Server security updates

Our web page for security announcements:

   http://www.turbolinux.com/security

If you want to report vulnerabilities, please contact:

   security@turbolinux.com
___________________________________________________________________________

Subscribe to the Turbolinux Security Mailing lists:

  TL-security - A moderated list for discussing security issues
                Turbolinux products.
  Subscribe at http://www.turbolinux.com/mailman/listinfo/tl-security

  TL-security-announce - An announce-only mailing list for security updates
  and alerts.
  Subscribe at:

      http://www.turbolinux.com/mailman/listinfo/tl-security-announce
___________________________________________________________________________


--V0207lvV8h4k8FAm
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org

iD8DBQE8T129GVt47C4g7pwRAjpVAJ9JxooRGzbEnc3m0IDRnjF7Ob6fJwCff8ml
f5FtZE5irGqe4lcROxmnChs=
=HZ2O
-----END PGP SIGNATURE-----

--V0207lvV8h4k8FAm--


_______________________________________________
TL-Security-Announce mailing list
TL-Security-Announce@www.turbolinux.com
http://www.turbolinux.com/mailman/listinfo/tl-security-announce

 
 


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 2020, SecurityGlobal.net LLC