CVE-2022-39951 Explained : Impact and Mitigation
Learn about CVE-2022-39951, a high-severity OS command injection vulnerability in Fortinet FortiWeb versions, allowing unauthorized code execution through crafted HTTP requests. Find mitigation steps and upgrade recommendations.
This article provides detailed information about CVE-2022-39951, a vulnerability found in Fortinet FortiWeb that allows attackers to execute unauthorized code or commands.
Understanding CVE-2022-39951
CVE-2022-39951 is an 'os command injection' vulnerability in Fortinet FortiWeb versions 7.0.0 through 7.0.2, 6.3.6 through 6.3.20, and all versions of 6.4, which could be exploited via specially crafted HTTP requests.
What is CVE-2022-39951?
The CVE-2022-39951 vulnerability involves improper neutralization of special elements used in an OS command in Fortinet FortiWeb, allowing an attacker to execute unauthorized code or commands through specific HTTP requests.
The Impact of CVE-2022-39951
This vulnerability has a CVSS v3.1 base score of 7.2 out of 10, indicating a high severity issue. It can lead to unauthorized code execution, posing risks to confidentiality, integrity, and availability of affected systems.
Technical Details of CVE-2022-39951
Vulnerability Description
The vulnerability arises due to inadequate validation of OS command inputs in Fortinet FortiWeb, enabling malicious actors to execute arbitrary commands, compromising system security.
Affected Systems and Versions
Fortinet FortiWeb versions 7.0.0 to 7.0.2, 6.3.6 to 6.3.20, and all versions of 6.4 are impacted by CVE-2022-39951, exposing them to potential command injection attacks.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting specific HTTP requests to inject unauthorized code or commands, taking advantage of the flawed input validation process.
Mitigation and Prevention
Immediate Steps to Take
To mitigate the risks posed by CVE-2022-39951, users are advised to upgrade their Fortinet FortiWeb installations to version 7.2.0 or above, version 7.0.3 or above, or version 6.3.21 or above to patch the vulnerability.
Long-Term Security Practices
In the long term, maintaining regular security updates and following best practices for secure development and deployment can help prevent similar vulnerabilities from being exploited in the future.
Patching and Updates
Users should promptly apply security patches provided by Fortinet to address CVE-2022-39951 and stay informed about the latest security advisories to protect their systems.