[TL-Security-Announce] mtr-0.41 and earlier TLSA2000003-1 (fwd)

[k8e () MAIL TURBOLINUX COM (Katie Moussouris)]

---------- Forwarded message ----------
Date: Wed, 8 Mar 2000 17:18:21 -0800 (PST)
From: Katie Moussouris <k8e () mail turbolinux com>
Reply-To: tl-security-announce () www1 turbolinux com
To: tl-security-announce () turbolinux com
Subject: [TL-Security-Announce] mtr-0.41 and earlier TLSA2000003-1

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______________________________________________________________________________

                        TurboLinux Security Announcement

        Package: mtr-0.41 and earlier
        Date:    Wed Mar  8 14:54:54 PST 2000

        Affected TurboLinux versions: TurboLinux 6.0.2 and earlier
        Vulnerability Type:  Local root compromise
        TurboLinux Advisory ID#:  TLSA2000003-1
        Credits:  This vulnerability was posted to the Bugtraq mailing
list
        on March 3, 2000 by Viktor Fougstedt <viktor () DTEK CHALMERS SE>.
______________________________________________________________________________

A security hole was discovered in the package mentioned above.
Please update the package in your installation as soon as possible or
disable the service.
_____________________________________________________________________________

1. Problem Summary

   Older versions of mtr did not properly drop root privileges.  From
Viktor's original posting:  "Mtr only does a seteuid(), and not a full
setuid() when attempting to drop root privs.  Seteuid() _only_ affects the
effective uid of the process, and the saved uid is therefore still 0 after
this call. When a process has saved uid 0, it may issue a setuid(0) to
regain full root privileges (i.e. real and effective uid 0)."

2. Impact

   A malicious user could take control over mtr (perhaps through gtk or
curses) and can then execute arbitrary code as root.

3. Solution

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

  rpm -Uv ftp_path_to_filename

  Where ftp_path_to_filename is the following:

  ftp://ftp.turbolinux.com/pub/updates/6.0/security/mtr-0.42-1.i386.rpm

  The source rpm can be downloaded here:

  ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/mtr-0.42-1.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 checksum of the update before you install:

  MD5 sum                               Package Name
-
----------------------------------------------------------------------------
966e78977e5847d817efed904009f467        mtr-0.42-1.i386.rpm
3efef9f2d24f4169f02574063f5cbb1f        mtr-0.42-1.src.rpm
______________________________________________________________________________

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/4.0/security/ for TL4.0 Workstation
and Server security updates

Our webpage for security announcements:

  http://www.turbolinux.com/security

If you want to report vulnerabilities, please contact:
  security-rt () turbolinux com
______________________________________________________________________________

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

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