CVE-2022-26114 : Exploit Details and Defense Strategies

This article provides detailed information about CVE-2022-26114, which affects Fortinet FortiMail before 7.2.0 and involves an improper neutralization of input vulnerability that could lead to a cross-site scripting (XSS) attack.

Understanding CVE-2022-26114

CVE-2022-26114 is a vulnerability found in the Webmail component of Fortinet FortiMail before version 7.2.0. The issue arises due to improper neutralization of input during web page generation, potentially enabling an unauthenticated attacker to initiate a cross-site scripting attack by sending specially crafted mail messages.

What is CVE-2022-26114?

The vulnerability in Fortinet FortiMail before 7.2.0, categorized under CWE-79, may allow an unauthenticated attacker to trigger a cross-site scripting (XSS) attack by exploiting improper input neutralization during web page generation.

The Impact of CVE-2022-26114

With a CVSS base score of 5.1 (Medium severity), the impact of CVE-2022-26114 includes low confidentiality and integrity impacts. While the attack complexity is rated as low, exploitation requires user interaction and privileges.

Technical Details of CVE-2022-26114

The following technical details outline the vulnerability, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability involves an improper neutralization of input during web page generation in Fortinet FortiMail's Webmail, potentially leading to a cross-site scripting (XSS) attack through specially crafted mail messages.

Affected Systems and Versions

Fortinet FortiMail versions before 7.2.0 are affected by this vulnerability.

Exploitation Mechanism

An unauthenticated attacker can exploit this vulnerability by crafting malicious email messages to trigger a cross-site scripting attack within the Webmail component.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-26114, immediate steps should be taken while establishing long-term security practices and ensuring timely patching and updates.

Immediate Steps to Take

Ensure user awareness regarding suspicious emails, apply email filtering rules to detect malicious content, and consider disabling Webmail if not essential.

Long-Term Security Practices

Regular security training for users, implementing content security policies, and monitoring email traffic for anomalies can enhance long-term security.

Patching and Updates

Update Fortinet FortiMail to version 7.2.0 or newer, which addresses the vulnerability and includes security enhancements.