Debian: 'mailx' buffer overflow

    Date13 Mar 2001
    CategoryDebian
    2833
    Posted ByLinuxSecurity Advisories
    The mail program (a simple tool to read and send email) as distributed with Debian GNU/Linux 2.2 has a buffer overflow in the input parsing code.
    
    ------------------------------------------------------------------------
    Debian Security Advisory DSA-044-1                   This email address is being protected from spambots. You need JavaScript enabled to view it. 
    http://www.debian.org/security/                         Wichert Akkerman
    March 13, 2001
    ------------------------------------------------------------------------
    
    
    Package        : mailx
    Problem type   : buffer overflow
    Debian-specific: no
    
    The mail program (a simple tool to read and send email) as
    distributed with Debian GNU/Linux 2.2 has a buffer overflow in the
    input parsing code. Since mail is installed setgid mail by default
    this allowed local users to use it to gain access to mail group.
    
    Since the mail code was never written to be secure fixing it
    properly would mean a large rewrite. Instead of doing this we
    decided to no longer install it setgid. This means that it can no
    longer lock your mailbox properly on systems for which you need
    group mail to write to the mailspool, but it will still work for
    sending email.
    
    This has been fixed in mailx version 8.1.1-10.1.5. If you have
    suidmanager installed you can also make this manually with the
    following command:
    
         suidregister /usr/bin/mail root root 0755
    
    
    wget url
            will fetch the file for you
    dpkg -i file.deb
            will install the referenced file.
    
    
    Debian GNU/Linux 2.2 alias potato
    ---------------------------------
    
      Potato was released for alpha, arm, i386, m68k, powerpc and sparc.
    
      Source archives:
         http://security.debian.org/dists/stable/updates/main/source/mailx_8.1.1-10.1.5.diff.gz
          MD5 checksum: bfc7cf2139819cb25750cddc4c939931
         http://security.debian.org/dists/stable/updates/main/source/mailx_8.1.1-10.1.5.dsc
          MD5 checksum: 564992494f775638eeae0bc3427c513a
         http://security.debian.org/dists/stable/updates/main/source/mailx_8.1.1.orig.tar.gz
          MD5 checksum: c779002cb043b57fd5198ec2032cacb0
    
      Alpha architecture:
         http://security.debian.org/dists/stable/updates/main/binary-alpha/mailx_8.1.1-10.1.5_alpha.deb
          MD5 checksum: 37edc09cfe3c96994dfeff42c42fe9b2
    
      ARM architecture:
         http://security.debian.org/dists/stable/updates/main/binary-arm/mailx_8.1.1-10.1.5_arm.deb
          MD5 checksum: 8c50598bb486d62ad312730083e674f1
    
      Intel ia32 architecture:
         http://security.debian.org/dists/stable/updates/main/binary-i386/mailx_8.1.1-10.1.5_i386.deb
          MD5 checksum: 18d30b35676fa9887a626c46909c9d9d
    
      Motorola 680x0 architecture:
         http://security.debian.org/dists/stable/updates/main/binary-m68k/mailx_8.1.1-10.1.5_m68k.deb
          MD5 checksum: 86ef8e4cf85e1634096ba52ed1f10987
    
      PowerPC architecture:
         http://security.debian.org/dists/stable/updates/main/binary-powerpc/mailx_8.1.1-10.1.5_powerpc.deb
          MD5 checksum: 97ec939047cdb7025095701df840838e
    
      Sun Sparc architecture:
         http://security.debian.org/dists/stable/updates/main/binary-sparc/mailx_8.1.1-10.1.5_sparc.deb
          MD5 checksum: 7b22c952196f2e604558d4b12ef23932
    
      These files will be moved into
       ftp://ftp.debian.org/debian/dists/stable/*/binary-$arch/ soon.
    
    For not yet released architectures please refer to the appropriate
    directory  ftp://ftp.debian.org/debian/dists/sid/binary-$arch/ .
    
    --
    ----------------------------------------------------------------------------
    apt-get: deb  http://security.debian.org/ stable/updates main
    dpkg-ftp:  ftp://security.debian.org/debian-security dists/stable/updates/main
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