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Date: Thu, 26 Jan 2012 21:07:06 +0200 From: "MustLive" <mustlive@...security.com.ua> To: <submissions@...ketstormsecurity.org>, <full-disclosure@...ts.grok.org.uk> Subject: Multiple new vulnerabilities in Register Plus for WordPress Hello list! I want to warn you about multiple new vulnerabilities in plugin Register Plus for WordPress. These are Cross-Site Scripting, Code Execution and Full path disclosure vulnerabilities. ------------------------- Affected products: ------------------------- Vulnerable are Register Plus 3.5.1 and previous versions. Taking into account, that this plugin is no more supported by developer, then users of the plugin need to fix these holes by themselves. Or to update this plugin to version of Register Plus Redux with fixed vulnerabilities. Which I've told about in previous advisory (http://securityvulns.com/docs27545.html). ---------- Details: ---------- XSS (WASC-08): By using function Autocomplete URL it's possible to conduct attack via GET: http://site/wp-login.php?action=register&firstname=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E http://site/wp-login.php?action=register&lastname=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E http://site/wp-login.php?action=register&website=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E http://site/wp-login.php?action=register&aim=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E http://site/wp-login.php?action=register&yahoo=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E http://site/wp-login.php?action=register&jabber=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E http://site/wp-login.php?action=register&about=%3C/textarea%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E http://site/wp-login.php?action=register®code=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3E Vulnerable are all those parameters, as at POST request. Which I've told about earlier (http://websecurity.com.ua/4539/). Persistent XSS (WASC-08): If to set XSS code as file name (e.g. it's possible to create such file on Linux and Unix systems) and to upload it, the code will execute at pages http://site/wp-admin/options-general.php?page=register-plus and http://site/wp-login.php?action=register. Code Execution (WASC-31): If to have access to plugin settings, it's possible to conduct Code Execution (in field Custom Logo) via uploading of file with arbitrary extension (e.g. PHP). For attack it's possible to upload just 1.php (unlike Register Plus Redux, where it's not possible and bypass techniques need to be used). This is because own uploader is using, not built-in WordPress. Full path disclosure (WASC-13): At turned on plugin's option "Enable Invitation Tracking Dashboard Widget" the full path at the server will be shown at page http://site/wp-admin/index.php. ------------ Timeline: ------------ 2011.11.25 - found vulnerabilities in Register Plus Redux. 2011.11.25 - found vulnerabilities in Register Plus. 2011.11.30 - fixed vulnerabilities in Register Plus Redux. 2011.11.30 - released Register Plus Redux 3.8 (with fixed all vulnerabilities of version 3.7.3.1). Which I recommend to use instead of Register Plus. 2011.12.06 - announced at my site. 2011.12.08 - informed developer. 2012.01.26 - disclosed at my site. I mentioned about these vulnerabilities at my site: http://websecurity.com.ua/5547/ Best wishes & regards, MustLive Administrator of Websecurity web site http://websecurity.com.ua _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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