SB2019070812 - Multiple vulnerabilities in Zoner Real Estate theme for WordPress

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Reflected cross-site scripting (CVE-ID: N/A)

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`)>

2) Stored cross-site scripting (CVE-ID: N/A)

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: "><script>alert('QUIXSS')</script>

Sample payload #2: "><img src="x" onerror="alert('QUIXSS');">

Sample payload #3: "><img src=x onerror=alert('QUIXSS')>

Remediation

Install update from vendor's website.

References

• https://themeforest.net/item/zoner-real-estate-wordpress-theme/9099226