CVE-2023-25603 : Security Advisory and Response
Learn about CVE-2023-25603, a permissive cross-domain policy vulnerability in Fortinet products allowing attackers to execute privileged actions and access sensitive information. Find out the impact, affected systems, and mitigation steps.
This CVE-2023-25603 vulnerability was published on November 14, 2023, by Fortinet. It involves a permissive cross-domain policy with untrusted domains vulnerability in Fortinet FortiADC versions 7.1.0 - 7.1.1, FortiDDoS-F versions 6.3.0 - 6.3.4, and 6.4.0 - 6.4.1. This vulnerability could allow an unauthorized attacker to execute privileged actions and access sensitive information through specially crafted web requests.
Understanding CVE-2023-25603
This section delves deeper into the details of CVE-2023-25603, including its impact, technical aspects, and how to mitigate the risk associated with it.
What is CVE-2023-25603?
CVE-2023-25603 is a vulnerability found in Fortinet products, specifically FortiADC and FortiDDoS-F, that enables unauthorized attackers to perform privileged actions and retrieve sensitive data using malicious web requests.
The Impact of CVE-2023-25603
The impact of this vulnerability is rated as medium with a CVSSv3 base score of 5.4. It poses a risk to confidentiality, integrity, and low privileges required. The attack complexity is considered low with network accessibility, while user interaction is required for exploitation.
Technical Details of CVE-2023-25603
This section outlines the specific technical details related to CVE-2023-25603, including the vulnerability description, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability in FortiADC and FortiDDoS-F arises from a permissive cross-domain policy with untrusted domains, allowing attackers to carry out privileged actions and access sensitive information using crafted web requests.
Affected Systems and Versions
Fortinet FortiDDoS-F versions 6.3.0 - 6.3.4 and 6.4.0 - 6.4.1, as well as FortiADC version 7.1.0 - 7.1.1, are impacted by CVE-2023-25603.
Exploitation Mechanism
Attackers exploit this vulnerability by manipulating web requests to bypass security controls and perform unauthorized actions on vulnerable Fortinet products.
Mitigation and Prevention
To address CVE-2023-25603 and prevent potential security risks, immediate steps should be taken, and long-term security practices should be implemented to safeguard against similar vulnerabilities in the future.
Immediate Steps to Take
It is recommended to upgrade FortiDDoS-F to version 6.5.0 or above, or version 6.4.2 or above. For FortiADC, upgrading to version 7.2.0 or above, or version 7.1.2 or above, is advised to mitigate the vulnerability.
Long-Term Security Practices
Implementing robust access controls, regular security assessments, and staying informed about security updates from Fortinet can enhance the overall security posture and reduce the risk of similar vulnerabilities.
Patching and Updates
Regularly applying patches and updates provided by Fortinet for their products is essential to address known vulnerabilities, protect systems from potential exploits, and ensure a secure IT environment.