CVE-2024-29211
📋 TL;DR
A race condition vulnerability in Ivanti Secure Access Client allows local authenticated attackers to modify sensitive configuration files. This could lead to privilege escalation or unauthorized access to protected resources. Only affects systems running Ivanti Secure Access Client versions before 22.7R4.
💻 Affected Systems
- Ivanti Secure Access Client
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains administrative privileges, modifies VPN configurations to intercept traffic, or installs persistent backdoors.
Likely Case
Local user elevates privileges to modify VPN settings or access restricted network resources.
If Mitigated
Minimal impact with proper access controls, file permissions, and monitoring in place.
🎯 Exploit Status
Race conditions require precise timing and local access. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 22.7R4
Vendor Advisory: https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Connect-Secure-ICS-Ivanti-Policy-Secure-IPS-Ivanti-Secure-Access-Client-ISAC-Multiple-CVEs
Restart Required: Yes
Instructions:
1. Download Ivanti Secure Access Client version 22.7R4 from official Ivanti portal. 2. Uninstall previous version. 3. Install new version. 4. Restart system.
🔧 Temporary Workarounds
Restrict local user access
allLimit local user accounts to only trusted personnel and implement least privilege principles.
Monitor configuration file changes
allImplement file integrity monitoring on Ivanti Secure Access Client configuration directories.
🧯 If You Can't Patch
- Implement strict access controls to limit local user privileges.
- Deploy file integrity monitoring to detect unauthorized configuration changes.
🔍 How to Verify
Check if Vulnerable:
Check Ivanti Secure Access Client version in application settings or via command line: On Windows: 'C:\Program Files\Ivanti\Secure Access Client\isac.exe --version'Check Version:
On Windows: 'C:\Program Files\Ivanti\Secure Access Client\isac.exe --version'Verify Fix Applied:
Verify installed version is 22.7R4 or later using the same version check command.📡 Detection & Monitoring
Log Indicators:
- Unexpected modifications to Ivanti configuration files
- Multiple rapid file access attempts to configuration files
- Unauthorized user accessing Ivanti directories
Network Indicators:
- Unusual VPN connection patterns
- Unexpected changes to VPN tunnel configurations
SIEM Query:
source="windows_security" EventID=4663 ObjectName="*Ivanti*" OR source="sysmon" EventID=11 TargetFilename="*Ivanti*config*"