SB2015010502 - Cross-site scripting in PortlandLabs concrete5

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2014-9526)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in concrete5 5.7.2.1, 5.7.2, and earlier when processing the (1) gName parameter in single_pages/dashboard/users/groups/bulkupdate.php or (2) instance_id parameter in tools/dashboard/sitemap_drag_request.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.

Remediation

Install update from vendor's website.

References

• http://morxploit.com/morxploits/morxconxss.txt
• http://packetstormsecurity.com/files/129446/Concrete5-CMS-5.7.2-5.7.2.1-Cross-Site-Scripting.html
• http://seclists.org/fulldisclosure/2014/Dec/38
• http://www.securityfocus.com/archive/1/534189/100/0/threaded
• https://exchange.xforce.ibmcloud.com/vulnerabilities/99264