Description

Joomla! Core is prone to a security bypass vulnerability. Exploiting this issue may allow attackers to bypass intended access restrictions and perform otherwise restricted actions. Joomla! Core versions ranging from 1.5.0 and up to and including 3.8.12 are vulnerable.

Remediation

Update to Joomla! Core version 3.8.13 or latest

References

https://developer.joomla.org/security-centre/754-20181004-core-acl-violation-in-com-users-for-the-admin-verification.html

Related Vulnerabilities

WordPress Plugin Archivist-Custom Archive Templates Multiple Vulnerabilities (1.7.4)

ReviveAdserver Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2016-9127)

Apache Tomcat Improper Input Validation Vulnerability (CVE-2011-2526)

Ruby on Rails Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2020-8162)

Zope Web Application Server CVE-2011-3587 Vulnerability (CVE-2011-3587)

Severity

High

Classification

CVE-2018-17855 CWE-264 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Tags

Missing Update Authentication Bypass