Description

Joomla! Core is prone to multiple vulnerabilities, including cross-site scripting and PHP object injection vulnerabilities. Exploiting these issues could allow an attacker to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site, allowing the attacker to steal cookie-based authentication credentials and launch other attacks, or to possibly execute arbitrary PHP code within the context of the affected webserver process. Joomla! Core versions ranging from 2.5.0 and up to and including 3.9.2 are vulnerable.

Remediation

Update to Joomla! Core version 3.9.3 or latest

References

https://developer.joomla.org/security-centre/765-20190201-core-lack-of-url-filtering-in-various-core-components.html

https://developer.joomla.org/security-centre/767-20190203-core-additional-warning-in-the-global-configuration-textfilter-settings.html

https://developer.joomla.org/security-centre/768-20190204-core-stored-xss-issue-in-the-global-configuration-help-url-2.html

https://developer.joomla.org/security-centre/769-20190205-core-xss-issue-in-core-js-writedynalist.html

https://developer.joomla.org/security-centre/770-20190206-core-implement-the-typo3-phar-stream-wrapper.html

Related Vulnerabilities

WordPress Plugin Ultimate Membership Pro Security Bypass (8.6)

WordPress Plugin Clone Cross-Site Scripting (2.1.1)

Elgg Exposure of Private Personal Information to an Unauthorized Actor Vulnerability (CVE-2021-3980)

WordPress Plugin WordPress Email Template Designer-WP HTML Mail Cross-Site Scripting (3.0.9)

WebLogic CVE-2021-2142 Vulnerability (CVE-2021-2142)

Severity

High

Classification

CVE-2019-7739 CVE-2019-7740 CVE-2019-7741 CVE-2019-7743 CVE-2019-7744 CWE-79 CWE-915 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Tags

Missing Update