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Debian: 'im' Temp file vulnerability Print E-mail
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Posted by Team   
Debian Tatsuya Kinoshita discovered that IM, which contains interfacecommands and Perl libraries for E-mail and NetNews, creates temporaryfiles insecurely.

Debian Security Advisory DSA 202-1                                        Martin Schulze
December 3rd, 2002             

Package        : im
Vulnerability  : temporary files
Problem-Type   : local
Debian-specific: no

Tatsuya Kinoshita discovered that IM, which contains interface
commands and Perl libraries for E-mail and NetNews, creates temporary
files insecurely.

 1. The impwagent program creates a temporary directory in an insecure
    manner in /tmp using predictable directory names without checking
    the return code of mkdir, so it's possible to seize a permission
    of the temporary directory by local access as another user.

 2. The immknmz program creates a temporary file in an insecure manner
    in /tmp using a predictable filename, so an attacker with local
    access can easily create and overwrite files as another user.

These problems have been fixed in version 141-18.1 for the current
stable distribution (woody), in version 133-2.2 of the old stable
distribution (potato) and in version 141-20 for the unstable
distribution (sid).

We recommend that you upgrade your IM package.

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.

Debian GNU/Linux 2.2 alias potato

  Source archives:
      Size/MD5 checksum:      513 da21bcdcce62f783b15750469140595e
      Size/MD5 checksum:     6929 0669a546380d3e2d702f1ecd3ef6fd7b
      Size/MD5 checksum:   205055 df14f9a251a8d47fc045b6303090be47

  Architecture independent components:
      Size/MD5 checksum:   217576 15a164603f65eb355f97515aaa97340a

Debian GNU/Linux 3.0 alias woody

  Source archives:
      Size/MD5 checksum:      568 86a87c81e159d54359eeac2c3c383ffb
      Size/MD5 checksum:    14110 2cb6b858ccda19f96b3c5315a48a41c0
      Size/MD5 checksum:   207576 9ecd2d6009048f1fecbc7b2e0e8cd489

  Architecture independent components:
      Size/MD5 checksum:   217416 41a6ad3bc0b0591ba180dd5d646387f9

  These files will probably be moved into the stable distribution on
  its next revision.

Survey on the use of Debian GNU/Linux 2.2 alias potato:

For apt-get: deb stable/updates main
For dpkg-ftp: dists/stable/updates/main
Mailing list:
Package info: `apt-cache show ' and

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