Vulnerability identifier: #VU19039

Vulnerability risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Zoner - Real Estate WordPress Theme
Web applications / Modules and components for CMS

Vendor: Fruitful Code

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to weak security measures like bad input fields data filtering. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in 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.

PoC:

Sample payload #1: "><img src="x" onerror="alert(document.cookie)">

Sample payload #2: "><img src="x" onerror=window.location.replace(`https://twitter.com/quixss`)>

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zoner - Real Estate WordPress Theme: 1.0 - 4.1

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External links
http://themeforest.net/item/zoner-real-estate-wordpress-theme/9099226

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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.