[UNIX] FACE CONTROL CMS vis.pl Directory Traversal

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FACE CONTROL CMS vis.pl Directory Traversal
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SUMMARY

<http://www.elido.com/cgi-bin/e-cms/vis/vis.pl?s=001&p=0009&g=> FACE
CONTROL- CMS The E-cms vis.pl script does not filter for dangerous
characters, allowing attackers to open arbitrary files.

DETAILS

c

Vulnerable Code:
if ( -e $datFile )
{
open ( DAT_FILE, "$datFile" );


Example:
All variables that open files are unsafe:
http://[target]/cgi-bin/e-cms/vis/vis.pl?s=001&p=../../../../etc/passwd%00

http://[target]/cgi-bin/e-cms/vis/vis.pl?s=../../../../etc/passwd%00

Solution:
Remove vis.pl from your system if it is unused.
Filter or escape dangerous characters from all the user parameters.
You have to insert a line like this for ALL variables which contain files
to open, system calls and SQL.
For more information see:
<http://perldoc.perl.org/perlsec.html>
http://perldoc.perl.org/perlsec.html


ADDITIONAL INFORMATION

The information has been provided by <mailto:spher3@xxxxxxxxxxxxxxxxx>
spher3.



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