Description

WordPress Plugin Captcha 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 Captcha by BestWebSoft version 4.2.9 is vulnerable; prior versions may also be affected.

Remediation

Update to plugin version 4.3.0 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/captcha/#changelog

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

Related Vulnerabilities

WordPress Plugin Easy Appointments Cross-Site Scripting (1.11.7)

WordPress Plugin AI ChatBot Arbitrary File Deletion (4.9.2)

ownCloud Other Vulnerability (CVE-2022-25339)

WordPress Ultimate Member Plugin Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2016-10872)

PHP Improper Link Resolution Before File Access ('Link Following') Vulnerability (CVE-2011-0441)

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 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

Tags

Missing Update XSS