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Sicherheit: Unsichere Verwendung von /tmp in IM
Aktuelle Meldungen Distributionen
Name: Unsichere Verwendung von /tmp in IM
ID: DSA-202-1
Distribution: Debian
Plattformen: Debian potato
Datum: Mi, 4. Dezember 2002, 12:00
Referenzen: Keine Angabe
Applikationen: im

Originalnachricht

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Debian Security Advisory DSA 202-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
December 3rd, 2002 http://www.debian.org/security/faq
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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:

http://security.debian.org/pool/updates/main/i/im/im_133-2.2.dsc
Size/MD5 checksum: 513 da21bcdcce62f783b15750469140595e
http://security.debian.org/pool/updates/main/i/im/im_133-2.2.diff.gz
Size/MD5 checksum: 6929 0669a546380d3e2d702f1ecd3ef6fd7b
http://security.debian.org/pool/updates/main/i/im/im_133.orig.tar.gz
Size/MD5 checksum: 205055 df14f9a251a8d47fc045b6303090be47

Architecture independent components:

http://security.debian.org/pool/updates/main/i/im/im_133-2.2_all.deb
Size/MD5 checksum: 217576 15a164603f65eb355f97515aaa97340a


Debian GNU/Linux 3.0 alias woody
--------------------------------

Source archives:

http://security.debian.org/pool/updates/main/i/im/im_141-18.1.dsc
Size/MD5 checksum: 568 86a87c81e159d54359eeac2c3c383ffb
http://security.debian.org/pool/updates/main/i/im/im_141-18.1.diff.gz
Size/MD5 checksum: 14110 2cb6b858ccda19f96b3c5315a48a41c0
http://security.debian.org/pool/updates/main/i/im/im_141.orig.tar.gz
Size/MD5 checksum: 207576 9ecd2d6009048f1fecbc7b2e0e8cd489

Architecture independent components:

http://security.debian.org/pool/updates/main/i/im/im_141-18.1_all.deb
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:
http://lists.debian.org/debian-devel-announce-0211/msg00001.html

--------------------------------------------------------------------------------
-
For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-securitydists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>


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