CVE-2024-8963

9.4 CRITICAL

📋 TL;DR

This is a path traversal vulnerability in Ivanti CSA (Cloud Services Appliance) that allows remote unauthenticated attackers to bypass security restrictions and access restricted functionality. It affects Ivanti CSA versions before 4.6 Patch 519. Organizations using vulnerable Ivanti CSA appliances are at risk.

💻 Affected Systems

Products:
  • Ivanti Cloud Services Appliance (CSA)
Versions: All versions before 4.6 Patch 519
Operating Systems: Linux-based appliance OS
Default Config Vulnerable: ⚠️ Yes
Notes: Affects the web interface component of Ivanti CSA appliances.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise allowing attackers to access sensitive data, execute arbitrary code, or take full control of the appliance.

🟠

Likely Case

Unauthorized access to administrative functions, configuration data, or sensitive files leading to data exposure and potential lateral movement.

🟢

If Mitigated

Limited impact due to network segmentation and proper access controls preventing exploitation attempts.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: CONFIRMED
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

CISA has confirmed active exploitation in the wild. Attack requires network access to the appliance web interface.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 4.6 Patch 519 or later

Vendor Advisory: https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-CSA-4-6-Cloud-Services-Appliance-CVE-2024-8963

Restart Required: Yes

Instructions:

1. Log into Ivanti CSA admin interface. 2. Navigate to System > Updates. 3. Apply Patch 519 or later. 4. Restart the appliance as prompted.

🔧 Temporary Workarounds

Network Access Restriction

linux

Restrict network access to Ivanti CSA web interface to trusted IP addresses only.

# Configure firewall rules to allow only trusted IPs to TCP ports 80/443
# Example: iptables -A INPUT -p tcp --dport 443 -s TRUSTED_IP -j ACCEPT
# Example: iptables -A INPUT -p tcp --dport 443 -j DROP

🧯 If You Can't Patch

  • Isolate the Ivanti CSA appliance in a separate network segment with strict access controls.
  • Implement web application firewall (WAF) rules to block path traversal patterns.

🔍 How to Verify

Check if Vulnerable:

Check the Ivanti CSA version in the admin interface under System > About. If version is below 4.6 Patch 519, the system is vulnerable.

Check Version:

# SSH to appliance and run: cat /etc/ivanti-release

Verify Fix Applied:

Verify the version shows 4.6 Patch 519 or later in System > About after applying the patch.

📡 Detection & Monitoring

Log Indicators:

  • Unusual file access patterns in web logs
  • Requests containing '../' or similar path traversal sequences
  • Access attempts to restricted admin endpoints from unauthorized sources

Network Indicators:

  • HTTP requests with path traversal payloads to CSA appliance
  • Unusual traffic spikes to CSA web interface

SIEM Query:

source="ivanti_csa" AND (uri="*../*" OR uri="*..\\*" OR status=403 OR status=404)

🔗 References

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