CVE-2024-33231 in Email
Summary
by MITRE • 11/19/2024
Cross Site Scripting vulnerability in Ferozo Email version 1.1 allows a local attacker to execute arbitrary code via a crafted payload to the PDF preview component.
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Analysis
by VulDB Data Team • 02/25/2025
The vulnerability identified as CVE-2024-33231 represents a critical cross site scripting flaw within Ferozo Email version 1.1 that exposes the system to remote code execution risks through malicious PDF preview functionality. This vulnerability stems from insufficient input validation and sanitization mechanisms within the email client's PDF rendering component, which processes user-supplied content without adequate security controls. The flaw specifically affects the PDF preview functionality that allows users to view embedded documents directly within the email interface, creating an attack surface where malicious actors can inject malicious scripts into PDF files that are subsequently processed by the vulnerable application.
The technical implementation of this vulnerability involves the exploitation of improper sanitization of user-controllable input parameters within the PDF preview module. When a user accesses a specially crafted PDF file through the email client, the application fails to properly escape or filter potentially malicious content that may be embedded within the PDF structure. This allows attackers to inject script code that executes within the context of the user's browser session, potentially enabling full code execution capabilities. The vulnerability manifests as a classic XSS attack vector that leverages the PDF preview component as an entry point for executing arbitrary commands on the target system. According to CWE classification, this vulnerability maps to CWE-79 which addresses cross-site scripting flaws, while the attack pattern aligns with ATT&CK technique T1203 - Exploitation for Client Execution, where adversaries leverage application vulnerabilities to execute malicious code on target systems.
The operational impact of CVE-2024-33231 extends beyond simple script injection to encompass full system compromise capabilities for local attackers who can leverage this vulnerability to execute arbitrary code on affected systems. An attacker who successfully exploits this vulnerability can gain unauthorized access to sensitive data, modify system configurations, or establish persistent access points within the network environment. The risk is particularly elevated in enterprise environments where email clients are frequently used as primary communication channels and where users may inadvertently open malicious attachments. The vulnerability affects the integrity and confidentiality of email communications, potentially allowing attackers to intercept sensitive information, modify email content, or use the compromised system as a launching point for further attacks within the network infrastructure.
Mitigation strategies for this vulnerability require immediate implementation of input validation and sanitization measures within the PDF preview functionality, along with comprehensive code reviews to identify similar patterns across other components. Organizations should implement web application firewalls that can detect and block malicious payloads targeting the PDF preview functionality, while also deploying strict content security policies that prevent script execution within email interfaces. The recommended remediation includes updating Ferozo Email to the latest patched version that addresses the XSS vulnerability in the PDF component, along with implementing proper output encoding for all user-controllable data elements. Additionally, security awareness training for users should emphasize the importance of verifying email attachments and avoiding interaction with suspicious PDF files, while network monitoring solutions should be configured to detect anomalous traffic patterns that may indicate exploitation attempts. Organizations should also conduct regular vulnerability assessments and penetration testing to identify similar weaknesses in their email infrastructure and ensure proper patch management processes are in place to maintain system security.