Recently, Joomla officially released a security update notice to fix a Joomla unauthorized access vulnerability (CVE-2023-23752), which was submitted by a researcher of NSFOCUS Tianji Lab. Due to flaws in Joomla’s access control to Web service endpoints, unauthenticated attackers access the RestAPI interface to obtain Joomla-related configuration information by constructing specially crafted requests, which eventually leads to the disclosure of sensitive information. At present, the PoC and the details of the vulnerability have been made public. Affected users are requested to take protective measures as soon as possible.
Joomla is a worldly well-known content management system, which is developed using PHP language and MySQL database, and can run on various platforms such as Linux, Windows, and MacOSX.
Vulnerability reproduction is as below:
Reference link: https://developer.joomla.org/security-centre/894-20230201-core-improper-access-check-in-webservice-endpoints.html
Scope of Impact
4.0.0 <= Joomla <= 4.2.7
Joomla >= 4.2.8
At present, the official security version has been released to fix this vulnerability. It is recommended that affected users upgrade their protection in time:
This advisory is only used to describe a potential risk. NSFOCUS does not provide any commitment or promise on this advisory. NSFOCUS and the author will not bear any liability for any direct and/or indirect consequences and losses caused by transmitting and/or using this advisory. NSFOCUS reserves all the rights to modify and interpret this advisory. Please include this statement paragraph when reproducing or transferring this advisory. Do not modify this advisory, add/delete any information to/from it, or use this advisory for commercial purposes without permission from NSFOCUS.
NSFOCUS, Inc., a global network and cyber security leader, protects enterprises and carriers from advanced cyber attacks. The company’s Intelligent Hybrid Security strategy utilizes both cloud and on-premises security platforms, built on a foundation of real-time global threat intelligence, to provide multi-layered, unified and dynamic protection against advanced cyber attacks.
NSFOCUS works with Fortune Global 500 companies, including four of the world’s five largest financial institutions, organizations in insurance, retail, healthcare, critical infrastructure industries as well as government agencies. NSFOCUS has technology and channel partners in more than 60 countries, is a member of both the Microsoft Active Protections Program (MAPP), and the Cloud Security Alliance (CSA).
A wholly owned subsidiary of NSFOCUS Technologies Group Co., Ltd., the company has operations in the Americas, Europe, the Middle East and Asia Pacific.