From:	 TurboLinux Security Team <security@www1.turbolinux.com>
To:	 tl-security-announce@www1.turbolinux.com
Subject: [TL-Security-Announce] TLSA2001007 ncurses-5.2-2
Date:	 Fri, 4 May 2001 20:07:39 -0700 (PDT)

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




___________________________________________________________________________

                     Turbolinux Security Announcement

        Package:  ncurses
        Vulnerable Packages: All versions previous to 5.2
        Date: 05/04/2001 5:00 PDT


        Affected Turbolinux versions: TL 6.1 WorkStation,
                                      All Turbolinux versions
                                      6.0.5 and earlier

        Turbolinux Advisory ID#:  TLSA2001007

        Credits: Vulnerability discovered by Jouko Pynnonen
                 < jouko@solutions.fi >
___________________________________________________________________________

A security hole has been discovered in this package.  Please update
the packages in your installation as soon as possible.
___________________________________________________________________________

1. Problem Summary

   Ncurses contains buffer overflow vulnerabilities.  It searches for 
   termcap entries in a file called .terminfo in the home directory.  If
   it exists, it makes string copies of data in the file to local buffers
   in the process' stack.  The copy process is insecure because it does
   not check to ensure that the amount of bytes copied does not exceed the
   predetermined buffer size.  Therefore, an attacker can easily create a
   .terminfo file with excessive data.  The excess data would overwrite
   bytes on the stack beyond the defined boundary of the buffer when
   copied.

2. Impact

   Attackers may be able to exploit setuid or setgid programs linked to
   ncurses and elevate their privileges.

   A program linked to ncurses isn't immediately vulnerable.  It must use
   certain functions within ncurses in some way in order for the vulnera-
   bility to be exploitable.

3. Solution

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

  rpm -Uvh ftp_path_to_filename

  Where ftp_path_to_filename is the following:

ftp://ftp.turbolinux.com/pub/updates/6.0/security/ncurses-5.2-2.i386.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/security/ncurses-devel-5.2-2.i386.rpm

  The source RPM can be downloaded here:

  ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/ncurses-5.2-2.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
- ---------------------------------------------------------------------------
 3249e53e7dd90f9e632db0455b160671      ncurses-5.2-2.i386.rpm
 945afabba59f62903cb676a5a52dec87      ncurses-devel-5.2-2.i386.rpm
 f8464c82ab7300551b0aca27060e8302      ncurses-5.2-2.src.rpm
___________________________________________________________________________

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

 http://www.turbolinux.com/security/tlgpgkey.asc

To verify a package, use the following command:

 rpm --checksig name_of_rpm

To examine only the md5sum, use the following command:

 md5sum 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

Our webpage 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

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.4 (GNU/Linux)
Comment: pgpenvelope 2.10.0 - http://pgpenvelope.sourceforge.net/

iD8DBQE6826Wcpw52/ZatwoRAlz6AKCTEfpB/7xkiTWJyayPOh4dnqmidQCfZSMZ
t46Uepx4CldME/ZrWDXBjiw=
=tDc0
-----END PGP SIGNATURE-----



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