Cross-site scripting in Essential Real Estate - #VU19047
Published: July 8, 2019
Vulnerability identifier: #VU19047
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: G5Theme
Affected software:
Essential Real Estate
Essential Real Estate
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data passed via the "package_user" and "property_author" parameters to /wp-admin/edit.php script. 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.
Exploitation examples:
https://[host]/wp-admin/edit.php?post_status=all&post_type=user_package&package_user="><svg/onload=alert(/XSS/)>&filter_action=Filter&paged=1
https://[host]/wp-admin/edit.php?post_status=all&post_type=property&property_author="><svg/onload=alert(/XSS/)>&property_identity&filter_action=Filter&paged=1
Remediation
Install updates from vendor's website.