Cross-site scripting in GetSimple CMS - CVE-2012-6621

Detailed vulnerability description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in GetSimple CMS 3.1, 3.1.2, 3.2.3, and earlier when processing the (1) Email Address or (2) Custom Permalink Structure fields in admin/settings.php; (3) path parameter to admin/upload.php; (4) err parameter to admin/theme.php; (5) error parameter to admin/pages.php; or (6) success or (7) err parameter to admin/index.php. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

How to mitigate CVE-2012-6621

Sources

• http://packetstormsecurity.com/files/124711
• http://packetstormsecurity.org/files/112643/GetSimple-CMS-3.1-Cross-Site-Scripting.html
• http://secunia.com/advisories/49137
• http://www.securityfocus.com/bid/53501
• http://www.vulnerability-lab.com/get_content.php?id=521
• https://exchange.xforce.ibmcloud.com/vulnerabilities/75534
• https://exchange.xforce.ibmcloud.com/vulnerabilities/75535