CVE-2023-47536 Explained : Impact and Mitigation
Learn about CVE-2023-47536, an improper access control vulnerability impacting FortiOS and FortiProxy versions. Discover the affected systems, exploitation details, and mitigation steps.
A detailed analysis of CVE-2023-47536, an improper access control vulnerability affecting FortiOS and FortiProxy.
Understanding CVE-2023-47536
This section delves into what CVE-2023-47536 entails and its potential impacts.
What is CVE-2023-47536?
CVE-2023-47536 is an improper access control vulnerability identified in FortiOS versions 7.2.0, 7.0.13 and below, 6.4.14 and below, and FortiProxy versions 7.2.3 and below, 7.0.9 and below, 2.0.12 and below. It may permit a remote unauthenticated attacker to bypass the firewall's deny geolocation policy by timing the bypass with a GeoIP database update.
The Impact of CVE-2023-47536
The vulnerability could be exploited by malicious actors to bypass firewall protections, potentially leading to unauthorized access to the system's resources and sensitive data.
Technical Details of CVE-2023-47536
Explore the technical specifics of CVE-2023-47536 to better understand the issue at hand.
Vulnerability Description
CVE-2023-47536 is categorized as an improper access control flaw, denoted by CWE-284. The vulnerability affects specific versions of FortiOS and FortiProxy, allowing attackers to circumvent geolocation policies.
Affected Systems and Versions
FortiOS versions 7.2.0, 7.0.13 and below, 6.4.14 and below, as well as FortiProxy versions 7.2.3 and below, 7.0.9 and below, 2.0.12 and below are known to be vulnerable to CVE-2023-47536.
Exploitation Mechanism
The vulnerability can be exploited remotely by unauthenticated attackers who time the bypass operation with a GeoIP database update, thereby evading firewall restrictions.
Mitigation and Prevention
Discover the necessary steps to mitigate and prevent potential exploits leveraging CVE-2023-47536.
Immediate Steps to Take
Users are advised to upgrade to the following software versions to address the vulnerability:
- FortiOS version 7.4.0 or above
- FortiOS version 7.2.1 or above
- FortiProxy version 7.4.0 or above
- FortiProxy version 7.2.4 or above
- FortiProxy version 7.0.10 or above
- FortiProxy version 2.0.13 or above
Long-Term Security Practices
Besides patching, enhancing network security measures, employing access controls, and monitoring for unauthorized activities can help prevent exploitation of similar vulnerabilities.
Patching and Updates
Regularly updating FortiOS and FortiProxy to the latest versions is crucial for safeguarding systems against known vulnerabilities.