CVE-2024-13179: Ivanti Avalanche Path Traversal Vulnerability

CVE-2024-13179 Overview

CVE-2024-13179 is a critical path traversal vulnerability affecting Ivanti Avalanche, an enterprise mobile device management (MDM) solution. This vulnerability allows a remote unauthenticated attacker to bypass authentication mechanisms by exploiting improper handling of file path inputs. Path traversal attacks (also known as directory traversal) enable attackers to access files and directories outside the intended directory structure, potentially leading to unauthorized access to sensitive system resources.

Critical Impact

Remote unauthenticated attackers can bypass authentication in Ivanti Avalanche deployments, potentially gaining unauthorized access to enterprise mobile device management infrastructure and the sensitive data it controls.

Affected Products

• Ivanti Avalanche versions prior to 6.4.7
• All Ivanti Avalanche deployments running unpatched versions

Discovery Timeline

• 2025-01-14 - CVE-2024-13179 published to NVD
• 2025-01-16 - Last updated in NVD database

Technical Details for CVE-2024-13179

Vulnerability Analysis

This path traversal vulnerability (CWE-22) exists in Ivanti Avalanche's authentication handling mechanisms. The vulnerability stems from insufficient validation of user-supplied input when processing file paths, allowing attackers to craft malicious requests that traverse the directory structure. By manipulating path components, an unauthenticated remote attacker can bypass the normal authentication flow and gain unauthorized access to the system.

Ivanti Avalanche is widely deployed in enterprise environments to manage mobile devices, making this vulnerability particularly concerning. Successful exploitation could grant attackers access to the MDM platform, potentially allowing them to view, modify, or delete managed device configurations, access sensitive corporate data, or use the compromised MDM as a pivot point for further attacks within the network.

Root Cause

The root cause of CVE-2024-13179 is improper input validation of path components in HTTP requests processed by Ivanti Avalanche. The application fails to properly sanitize user-supplied input containing directory traversal sequences such as ../ or encoded variants. This allows attackers to navigate outside the intended web root or application directory and access resources that should be protected by authentication mechanisms.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can remotely send specially crafted HTTP requests to the Ivanti Avalanche server containing path traversal sequences. These malicious requests manipulate the file path handling logic to access files or endpoints that bypass the normal authentication flow.

The attack typically involves:

1. Identifying the vulnerable endpoint in Ivanti Avalanche
2. Crafting HTTP requests with directory traversal sequences (e.g., ../, ..%2f, or other encoded variants)
3. Submitting requests to traverse to authentication bypass endpoints or access protected resources directly
4. Gaining unauthorized access to the Avalanche management console or backend functionality

For technical implementation details, refer to the Ivanti Security Advisory for Avalanche.

Detection Methods for CVE-2024-13179

Indicators of Compromise

• HTTP requests containing directory traversal sequences (../, ..%2f, %2e%2e%2f) in URL paths or parameters
• Unusual access patterns to Ivanti Avalanche endpoints from unauthenticated sources
• Log entries showing successful access to administrative functions without corresponding authentication events
• Anomalous file access patterns or reads of sensitive configuration files

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block path traversal patterns in incoming requests
• Enable comprehensive logging on Ivanti Avalanche servers and monitor for suspicious request patterns
• Implement network intrusion detection signatures for path traversal attack patterns targeting Ivanti Avalanche
• Conduct regular security audits of Ivanti Avalanche access logs looking for authentication bypass indicators

Monitoring Recommendations

• Configure SIEM alerts for requests containing path traversal indicators destined for Ivanti Avalanche servers
• Monitor network traffic for unusual volumes of requests to Ivanti Avalanche management interfaces
• Establish baseline behavior for authentication patterns and alert on deviations
• Implement file integrity monitoring on Ivanti Avalanche server configuration and sensitive directories

How to Mitigate CVE-2024-13179

Immediate Actions Required

• Upgrade Ivanti Avalanche to version 6.4.7 or later immediately
• If immediate patching is not possible, restrict network access to Ivanti Avalanche management interfaces to trusted IP ranges only
• Review Ivanti Avalanche access logs for evidence of exploitation attempts
• Implement network segmentation to isolate Ivanti Avalanche servers from general network traffic

Patch Information

Ivanti has released version 6.4.7 of Avalanche which addresses this vulnerability along with multiple other security issues. Organizations should prioritize upgrading to this version as soon as possible. The official security advisory and patch information is available at the Ivanti Security Advisory for Avalanche.

Workarounds

• Place Ivanti Avalanche servers behind a reverse proxy or WAF with path traversal filtering enabled
• Implement network access controls to limit which hosts can reach Ivanti Avalanche management interfaces
• Consider temporarily disabling external access to Ivanti Avalanche until patching is complete
• Deploy virtual patching through IPS/IDS solutions that can detect and block path traversal attacks

# Example: Restrict access to Ivanti Avalanche via firewall (Linux iptables)
# Allow only trusted management network to access Avalanche port
iptables -A INPUT -p tcp --dport 443 -s 10.0.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP