CVE-2023-39339
📋 TL;DR
This vulnerability allows authenticated administrators on Ivanti Policy Secure to read arbitrary files through specially crafted web requests. It affects all versions below 22.6R1, potentially exposing sensitive system files and configuration data to privileged users.
💻 Affected Systems
- Ivanti Policy Secure
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Administrator credentials could be compromised through lateral movement, allowing attackers to read sensitive files like configuration files, password hashes, or private keys, leading to full system compromise.
Likely Case
Malicious insiders or compromised admin accounts could exfiltrate sensitive configuration data, user information, or system files without detection.
If Mitigated
With proper access controls and monitoring, impact is limited to authorized administrators who should already have access to sensitive system information.
🎯 Exploit Status
Exploitation requires authenticated administrator access and knowledge of the vulnerable endpoint
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 22.6R1
Vendor Advisory: https://forums.ivanti.com/s/article/Security-patch-release-Ivanti-Policy-Secure-22-6R1
Restart Required: Yes
Instructions:
1. Download Ivanti Policy Secure 22.6R1 from Ivanti support portal. 2. Backup current configuration. 3. Apply the update following Ivanti's upgrade documentation. 4. Restart the system as required.
🔧 Temporary Workarounds
Restrict Administrator Access
allLimit the number of administrator accounts and implement strict access controls
Enhanced Monitoring
allImplement detailed logging and monitoring of administrator file access activities
🧯 If You Can't Patch
- Implement strict least-privilege access controls for administrator accounts
- Deploy network segmentation to isolate Ivanti Policy Secure from sensitive systems
🔍 How to Verify
Check if Vulnerable:
Check current version via Ivanti Policy Secure web interface or CLI. If version is below 22.6R1, system is vulnerable.Check Version:
Check via web interface: System > About, or via CLI: show versionVerify Fix Applied:
Verify system is running version 22.6R1 or higher after applying the patch.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns by administrator accounts
- Multiple failed file read attempts followed by successful reads
Network Indicators:
- Unusual HTTP requests to administrative endpoints with file path parameters
SIEM Query:
source="ivanti_policy_secure" AND (event_type="file_access" OR uri_path="/admin/*") AND user_role="administrator" AND file_path CONTAINS "../"