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 2.5.0 and up to and including 3.9.16 are vulnerable.

Remediation

Update to Joomla! Core version 3.9.17 or latest

References

https://github.com/HoangKien1020/CVE-2020-11890

https://developer.joomla.org/security-centre/810-20200402-core-missing-checks-for-the-root-usergroup-in-usergroup-table.html

Related Vulnerabilities

OpenSSL Other Vulnerability (CVE-2002-0656)

WordPress Plugin LittleBot ACH for Stripe + Plaid Unspecified Vulnerability (1.2.6)

MediaWiki Improper Input Validation Vulnerability (CVE-2014-5243)

Drupal Core 9.4.x Remote Code Execution (9.4.0 - 9.4.2)

WordPress Plugin Debug Bar Multiple Unspecified Vulnerabilities (0.8.4)

Severity

High

Classification

CVE-2020-11890 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