Vulnerability identifier: #VU41041

Vulnerability risk: Low

CVSSv3.1: 5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:U/RC:C]

CVE-ID: CVE-2014-8774

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
MODX Revolution
Web applications / CMS

Vendor: MODX

Description

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

An input validation error exists in manager/index.php in MODX Revolution 2.x before 2.2.15 when processing context_key parameter. 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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

MODX Revolution: 2.0.0 - 2.2.14

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External links
http://forums.modx.com/thread/92152/critical-login-xss-csrf-revolution-2-2-1-4-and-prior
http://hacktivity.websecgeeks.com/modx-csrf-and-xss/

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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. However, proof of concept for this vulnerability is available.