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Posted to dev@tomcat.apache.org by bu...@apache.org on 2005/03/02 19:22:05 UTC
DO NOT REPLY [Bug 32696] -
WEB-INF protection stops IIS
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http://issues.apache.org/bugzilla/show_bug.cgi?id=32696
sizing.tw@yahoo.com.tw changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|CLOSED |REOPENED
Component|Unknown |Connector:JK/AJP
Keywords| |ErrorMessage,
| |NeedsReleaseNote
Resolution|FIXED |
Version|4.1.30 |4.1.31
------- Additional Comments From sizing.tw@yahoo.com.tw 2005-03-02 19:22 -------
Finding: When the scanning tools guessed WEB-INF directory, the error message
indicated that access to the directory was denied. As a result, the error
message confirmed the existence of this directory.
Tomcat response HTTP Status 404, while isapi_redirect.dll redirector responses
Access forbidden!...., which is HTTP Status 403.
Example:
http://localhost:8080/WEB-INF/
Return: HTTP Status 404 - /WEB-INF/
This is correct.
http://localhost:80/WEB-INF/
Return: Access forbidden!
You don't have permission to access the requested object. It is either read-
protected or not readable by the server.
This should be 404, not 403.
I have checked the code, jakarta-tomcat-connectors-1.2.8-
src\jk\native\isapi\jk_isapi_plugin.c, at line 713, and it does response 403
HTTP Status. I cannot find the place to change it from configuration file
except re-compile this redirector.
While directory listing is not strictly considered vulnerability, I suggest to
response 404 HTTP Status to hide the directory, like Tomcat does now.
I found a link http://jakarta.apache.org/tomcat/connectors-doc/howto/iis.html
mentions something like this:
Protecting the WEB-INF Directory
...., this directory contains sensitive configurations data and Java classes
and must be kept hidden from web users. Using the IIS management console it is
possible to protect the WEB-INF directory from user access,.....
To avoid this need the redirector plugin automatically protects your WEB-INF
directories by rejecting any request that contains WEB-INF in its URL-Path.
I tried to configure IIS, but it looks like jk_isapi gets higher priority to
handle the request and always returns 403 status. Without re-compile the
program, how can I make IIS return 404 status? Or maybe next release will do?
Recommendation from Cert: When an unauthorized user attempts to access a
directory, they should receive an error message that doesn't confirm the
existence of the directory. Whether a user is trying to access a valid or
invalid directory, they should receive the same error message.
My system environment:
Win 2K
Tomcat 4.1.31
IIS 5
JK-1.2.8 - isapi_redirect-1.2.8.dll binary version - 17 December
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