CVE-2022-26122 : Vulnerability Insights and Analysis
Learn about CVE-2022-26122 affecting Fortinet AV Engine, FortiMail, and FortiOS, allowing attackers to bypass the AV engine via MIME attachments. Find mitigation steps here.
This article provides detailed information on CVE-2022-26122, an insufficient verification of data authenticity vulnerability in Fortinet products.
Understanding CVE-2022-26122
CVE-2022-26122 is a vulnerability impacting FortiClient, FortiMail, and FortiOS AV engines, allowing attackers to bypass the AV engine by manipulating MIME attachments.
What is CVE-2022-26122?
The CVE-2022-26122 vulnerability in Fortinet products, specifically in versions 6.2.168 and below and version 6.4.274 and below, enables attackers to bypass the AV engine through manipulation of MIME attachments using junk and pad characters in base64 encoding.
The Impact of CVE-2022-26122
This vulnerability can be exploited by threat actors to evade detection by the AV engine, potentially leading to successful malware infiltration and compromising system integrity.
Technical Details of CVE-2022-26122
This section outlines key technical aspects of CVE-2022-26122 vulnerability.
Vulnerability Description
The vulnerability arises from insufficient data authenticity verification, allowing attackers to craft malicious MIME attachments to bypass the AV engine.
Affected Systems and Versions
Fortinet products impacted include FortiClient, FortiMail, and FortiOS AV engines in versions 6.2.168 and below as well as version 6.4.274 and below.
Exploitation Mechanism
Attackers exploit this vulnerability by manipulating MIME attachments with junk and pad characters in base64, evading detection by the AV engine.
Mitigation and Prevention
To address CVE-2022-26122, immediate steps and long-term security practices are crucial to safeguard systems and data.
Immediate Steps to Take
Organizations should update Fortinet products to the latest versions, apply patches as soon as they are available, and implement security best practices to mitigate the risk of exploitation.
Long-Term Security Practices
Regularly monitor for security updates from Fortinet, conduct security assessments, and enhance email security measures to prevent similar vulnerabilities in the future.
Patching and Updates
Timely installation of security patches provided by Fortinet is essential to address known vulnerabilities and enhance system resilience against potential cyber threats.