CVE-2024-41713: Mitel MiCollab Path Traversal Flaw

CVE-2024-41713 Overview

A critical path traversal vulnerability exists in the NuPoint Unified Messaging (NPM) component of Mitel MiCollab through version 9.8 SP1 FP2 (9.8.1.201). This vulnerability allows an unauthenticated attacker to conduct a path traversal attack due to insufficient input validation in the NPM component. A successful exploit could allow unauthorized access to the system, enabling the attacker to view, corrupt, or delete users' data and system configurations.

Critical Impact

This vulnerability is actively being exploited in the wild and has been added to CISA's Known Exploited Vulnerabilities catalog. Unauthenticated remote attackers can access sensitive system data and configurations without any user interaction required.

Affected Products

• Mitel MiCollab versions through 9.8 SP1 FP2 (9.8.1.201)
• NuPoint Unified Messaging (NPM) component
• All deployments using vulnerable MiCollab versions

Discovery Timeline

• 2024-10-21 - CVE-2024-41713 published to NVD
• 2025-11-04 - Last updated in NVD database

Technical Details for CVE-2024-41713

Vulnerability Analysis

CVE-2024-41713 is a path traversal vulnerability (CWE-22) affecting the NuPoint Unified Messaging component within Mitel MiCollab. The vulnerability stems from insufficient input validation when processing user-supplied file paths. Because the application fails to properly sanitize directory traversal sequences (such as ../), attackers can escape the intended directory structure and access files outside the authorized scope.

The vulnerability is particularly severe because it requires no authentication, meaning any network-accessible attacker can exploit it remotely. Successful exploitation grants the attacker the ability to read sensitive configuration files, user data, and potentially corrupt or delete critical system files. This combination of unauthorized data access and potential data manipulation represents a significant security risk for organizations using affected MiCollab deployments.

Root Cause

The root cause of this vulnerability is insufficient input validation in the NuPoint Unified Messaging component. The application does not adequately sanitize user-controlled input that specifies file paths, allowing attackers to include path traversal sequences that navigate outside intended directories. This failure to validate and canonicalize file path inputs before processing enables unauthorized file system access.

Attack Vector

The attack is network-based and can be executed remotely by an unauthenticated attacker. The attacker sends specially crafted requests containing path traversal sequences to the NuPoint Unified Messaging component. By manipulating file path parameters with sequences like ../ or encoded variants, the attacker can traverse directory structures to access files outside the application's web root or designated directories.

The attack requires no privileges or user interaction, making it highly exploitable. Once successful, attackers can:

• Read sensitive configuration files containing credentials or system settings
• Access user data stored on the system
• Potentially corrupt or delete files, impacting system integrity and availability

Detection Methods for CVE-2024-41713

Indicators of Compromise

• HTTP requests to MiCollab endpoints containing path traversal sequences such as ../, ..%2f, %2e%2e/, or similar encoded patterns
• Unusual file access patterns in web server logs targeting the NuPoint Unified Messaging component
• Unauthorized access to configuration files or sensitive data directories
• Unexpected modifications or deletions of user data or system configuration files

Detection Strategies

• Monitor web application logs for requests containing directory traversal patterns targeting MiCollab services
• Implement web application firewall (WAF) rules to detect and block path traversal attempts
• Deploy SentinelOne Singularity XDR to detect anomalous file access behaviors and exploitation attempts
• Review access logs for unauthenticated requests attempting to access restricted file paths

Monitoring Recommendations

• Enable verbose logging on MiCollab servers to capture detailed request information
• Configure SIEM alerts for path traversal signature patterns in HTTP request URIs and parameters
• Monitor file system integrity on MiCollab servers for unauthorized access or modification to sensitive files
• Establish baseline behavior for MiCollab file access patterns and alert on deviations

How to Mitigate CVE-2024-41713

Immediate Actions Required

• Apply the security patch provided by Mitel immediately as this vulnerability is actively exploited
• Restrict network access to MiCollab systems to trusted IP ranges where possible
• Implement web application firewall rules to block path traversal attack patterns
• Review MiCollab logs for signs of prior exploitation attempts

Patch Information

Mitel has released a security advisory addressing this vulnerability. Organizations should upgrade Mitel MiCollab to a patched version as outlined in Mitel Security Advisory MISA-2024-0029. Given that this vulnerability is listed in the CISA Known Exploited Vulnerabilities Catalog, federal agencies and critical infrastructure operators may have mandatory remediation timelines.

Workarounds

• Deploy a reverse proxy or web application firewall in front of MiCollab to filter malicious requests containing path traversal patterns
• Restrict network access to the NuPoint Unified Messaging component to trusted networks only
• Implement strict input validation at the network perimeter for all requests to MiCollab services
• Consider temporarily disabling the NuPoint Unified Messaging component if not critically needed until patching is complete

# Example WAF rule to block common path traversal patterns
# ModSecurity rule for Apache/Nginx
SecRule REQUEST_URI "\.\./" "id:1001,phase:1,deny,status:403,msg:'Path Traversal Attempt Blocked'"
SecRule REQUEST_URI "%2e%2e" "id:1002,phase:1,deny,status:403,msg:'Encoded Path Traversal Blocked'"