CVE-2022-2225
📋 TL;DR
CVE-2022-2225 allows non-admin users to bypass Cloudflare WARP's Zero Trust security policies by using warp-cli subcommands to disable network interfaces. This affects organizations using Cloudflare WARP client for secure network access, potentially allowing users to circumvent security controls like Secure Web Gateway policies and the 'Lock WARP switch' feature.
💻 Affected Systems
- Cloudflare WARP client
📦 What is this software?
Warp by Cloudflare
Warp by Cloudflare
Warp by Cloudflare
⚠️ Risk & Real-World Impact
Worst Case
Malicious insider or compromised user account bypasses all Zero Trust security policies, accesses restricted resources, and exfiltrates sensitive data while appearing to be compliant with security controls.
Likely Case
Users intentionally or accidentally disable WARP protection to access blocked websites or services, creating security policy violations and potential data leakage.
If Mitigated
With proper admin controls and monitoring, impact is limited to policy violations that can be detected and remediated quickly.
🎯 Exploit Status
Exploitation requires local user access and knowledge of warp-cli commands. The advisory includes technical details that could be used to develop exploits.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2022.5.248.0 and later
Vendor Advisory: https://github.com/cloudflare/advisories/security/advisories/GHSA-cg88-vx48-976c
Restart Required: Yes
Instructions:
1. Update Cloudflare WARP client to version 2022.5.248.0 or later. 2. Restart the WARP service or reboot affected systems. 3. Verify the update was successful using warp-cli --version.
🔧 Temporary Workarounds
Restrict warp-cli access
linuxRemove or restrict execute permissions for warp-cli binary for non-admin users
sudo chmod 750 /usr/local/bin/warp-cli
sudo chown root:admin /usr/local/bin/warp-cli
Monitor warp-cli usage
allImplement monitoring for warp-cli command execution, particularly disable-ethernet and disable-wifi subcommands
🧯 If You Can't Patch
- Implement strict endpoint controls to prevent non-admin users from executing warp-cli commands
- Enhance monitoring and alerting for WARP client state changes and policy bypass attempts
🔍 How to Verify
Check if Vulnerable:
Check WARP client version: warp-cli --version. If version is earlier than 2022.5.248.0, system is vulnerable.Check Version:
warp-cli --versionVerify Fix Applied:
After update, verify version is 2022.5.248.0 or later. Test that non-admin users cannot disable network interfaces via warp-cli.📡 Detection & Monitoring
Log Indicators:
- warp-cli disable-ethernet or disable-wifi commands in system logs
- WARP service state changes without admin privileges
- Unexpected drops in WARP tunnel connections
Network Indicators:
- Direct internet connections bypassing WARP tunnel
- Traffic patterns inconsistent with Zero Trust policies
SIEM Query:
process.name="warp-cli" AND (command_line="*disable-ethernet*" OR command_line="*disable-wifi*")