Cross-site scripting in PortlandLabs concrete5

1) Cross-site scripting

EUVDB-ID: #VU40967

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-9526

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

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

concrete5: 5.7.2

External links

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
http://exchange.xforce.ibmcloud.com/vulnerabilities/99264

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.