SB2024082103 - Multiple vulnerabilities in Joomla!
Published: August 21, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Cross-site scripting (CVE-ID: CVE-2024-40743)
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data within the Outputfilter::stripImages and Outputfilter::stripIframes methods. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
2) Improper access control (CVE-ID: CVE-2024-27187)
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to improper access restrictions for backend profile view. A remote user can overwrite their username when this option is disabled by the application.
3) Stored cross-site scripting (CVE-ID: CVE-2024-27186)
The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in HTML mail templates. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
4) Input validation error (CVE-ID: CVE-2024-27185)
The vulnerability allows a remote attacker to posing application's cache.
The vulnerability exists due to insufficient validation of user-supplied input in pagination feature. A remote attacker can supply specially crafted input to the application and poison application's cache.
5) Open redirect (CVE-ID: CVE-2024-27184)
The vulnerability allows a remote attacker to redirect victims to arbitrary URL.
The vulnerability exists due to improper sanitization of user-supplied data when handling internal URLs. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.
Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.
Remediation
Install update from vendor's website.
References
- https://developer.joomla.org/security-centre/946-20240805-core-xss-vectors-in-outputfilter-strip-methods.html
- https://developer.joomla.org/security-centre/945-20240804-core-improper-acl-for-backend-profile-view.html
- https://developer.joomla.org/security-centre/944-20240803-core-xss-in-html-mail-templates.html
- https://developer.joomla.org/security-centre/942-20240802-core-cache-poisoning-in-pagination.html
- https://developer.joomla.org/security-centre/941-20240801-core-inadequate-validation-of-internal-urls.html