Description

WordPress Plugin Visitors Online 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 Visitors Online by BestWebSoft version 0.9 is vulnerable; prior versions may also be affected.

Remediation

Update to plugin version 1.0.0 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/visitors-online/#changelog

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

Related Vulnerabilities

Oracle Database Server CVE-2015-2585 Vulnerability (CVE-2015-2585)

WordPress Plugin open-flash-chart-core Remote Code Execution (0.4)

WordPress Plugin NewStatPress Multiple Vulnerabilities (1.0.4)

Oracle Application Server Other Vulnerability (CVE-2001-0591)

Apache Traffic Server Improper Input Validation Vulnerability (CVE-2017-5660)

Severity

High

Classification

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 CWE-79 CVE-2017-2171 CVE-2017-2171 CVE-2017-18537