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ExploitAlert : 7859 Credit : LiquidWorm Date : 01.03.2010 Exploit Code : ExtCalendar 2.0 Beta 2 (upgrade.php) Remote XSS Vulnerability Advisory ID: ZSL-2010-4928 Summary: ExtCalendar is a powerful multi-user web-based calendar application. Features include Multi-Languages, Themes, Recurrent Events, Categories, Users and Groups management, Environment and General Settings, Template Configuration, Product Updates. Product web page: http://sourceforge.net/projects/extcal/ Description: ExtCalendar is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and to launch other attacks. The issue exist in the upgrade.php script in the html_footer() function, line 361. Conditional on register_globals turned ON. This vuln was found using Pixy code auditor. Advisory: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2010-4928.php Details: ------------------------------------------------------------------------ *** detecting vulnerabilities *** ***************** XSS Analysis BEGIN ***************** Number of sinks: 10 XSS Analysis Output -------------------- Vulnerability detected! - conditional on register_globals=on - C:\wamp\www\extcal2.0_b2\upgrade.php:361 - Graph: xss10 Total Graph Count: 10 Total Vuln Count: 1 ***************** XSS Analysis END ***************** ------------------------------------------------------------------------ function html_footer() { global $step; echo <<<EOT <input type='hidden' name='step' value='$step'> </form> </div> </div> </body> </html> <noscript><plaintext> EOT; } ------------------------------------------------------------------------ Vulnerability discovered by Gjoko 'LiquidWorm' Krstic Zero Science Lab - http://www.zeroscience.mk liquidworm gmail com  Feedback : If you have additional information or notice any errors regarding this exploit, please use contact form or email us at exploit()securityreason()com. |
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Allow attacker to denial of service apache 2.2.17 server |
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