[UNIX] Multiple Security Vulnerabilities in CARE 2002
From: support@securiteam.comDate: 07/12/02
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From: support@securiteam.com To: list@securiteam.com Date: Fri, 12 Jul 2002 20:23:05 +0200 (CEST)
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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Multiple Security Vulnerabilities in CARE 2002
------------------------------------------------------------------------
SUMMARY
<http://www.care2x.com/modul.php?thispage=headlines&m_titel=NEWS&m_item=Headlines&lang=en> CARE 2002 is a smart software for hospitals and health care organizations. It is designed to integrate the different information systems existing in these organizations into one single efficient system. Multiple security vulnerabilities have been found in the product.
DETAILS
Vulnerable systems:
* CARE 2002 version 1.0.0.1 and prior
Immune systems:
* CARE 2002 version 1.0.0.2
Vulnerability #1 - Include and NULL problem
There are several include statements which use variables passed by the
user. Therefore, if register_globals is on and magic_quotes_gpc is off you
are able to read any file on the webserver:
/main/cafenews.php:
[...]
include("../language/".$lang."/lang_".$lang."_newsdummy.php");
[...]
If $lang contains NULL (a.k.a \0 or %00) the include statement ignores
everything after the NULL and includes the file. Here is some metacode
explaining the behavior:
Foobar.php looks like this:
<?php
include("../".$input."blubb");
?>
Calling the file with the following parameter:
foobar.php?input=bla%00bla
Results in (with enabled magic_quotes_gcp):
<br />
<b>Warning</b>: Failed opening '../bla\0blablubb' for inclusion
(include_path='.:/usr/local/lib/php') in
<b>/home/user/public_html/foobar.php</b> on
line
<b>2</b><br />
This is not exploitable, but if magic_quotes_gcp is turned off (as it is
recommended, for performance reasons):
<br />
<b>Warning</b>: Failed opening '../bla' for inclusion
(include_path='.:/usr/local/lib/php') in
<b>/home/user/public_html/foobar.php</b> on line
<b>2</b><br />
Everything after NULL (%00) is ignored. Therefore we can take a look at
the list of all available users:
foobar.php?input=../../../etc/passwd%00
You can open every world readable file you want.
Vulnerability #2 - Missing addslashes()
None of the data passed (there are just a few exceptions) to the MySQL is
checked for control characters like ', " et al. Therefore, anyone is able
to commit injected SQL queries. The problem exists, when magic_quotes_gpc
is turned off.
Solution:
The authors will release a new version 1.0.0.2 that will be immune to
these issues.
ADDITIONAL INFORMATION
The information has been provided by <mailto:avart@gmx.de> avart.
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