Description

WordPress Plugin Google Captcha (reCAPTCHA) by BestWebSoft is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin Google Captcha (reCAPTCHA) by BestWebSoft version 1.27 is vulnerable; prior versions may also be affected.

Remediation

Update to plugin version 1.28 or latest

References

http://www.defensecode.com/advisories/DC-2017-02-014_50_WordPress_plugins_by_BestWebSoft_Advisory.pdf

https://packetstormsecurity.com/files/142118/WordPress-BestWebSoft-XSS-CSRF.html

https://wordpress.org/plugins/google-captcha/#changelog

http://jvn.jp/en/jp/JVN24834813/index.html

Related Vulnerabilities

WordPress Plugin Uploader 'num' Parameter Cross-Site Scripting (1.0.0)

WordPress Plugin Username Changer Multiple Vulnerabilities (1.4)

WordPress Plugin Websimon Tables Cross-Site Scripting (1.3.4)

Apache httpOnly cookie disclosure

WordPress Plugin Resize Image After Upload Cross-Site Request Forgery (1.8.5)

Severity

High

Classification

CVE-2017-2171 CWE-79 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Tags

Missing Update XSS