CVE-2024-57225
📋 TL;DR
This CVE describes a command injection vulnerability in Linksys E7350 routers where an attacker can execute arbitrary commands via the devname parameter in the reset_wifi function. This allows remote code execution with root privileges on affected devices. All users running vulnerable firmware versions are affected.
💻 Affected Systems
- Linksys E7350
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing attacker to install persistent backdoors, intercept all network traffic, pivot to internal networks, or brick the device.
Likely Case
Attacker gains full control of the router to modify DNS settings, intercept credentials, or use as botnet node.
If Mitigated
No impact if device is not internet-facing and network segmentation prevents access to management interface.
🎯 Exploit Status
Public GitHub repository contains proof-of-concept. The vulnerability is straightforward to exploit with basic networking knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: Yes
Instructions:
1. Check Linksys support site for firmware updates. 2. Download latest firmware. 3. Access router admin interface. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Disable remote management
allPrevent external access to router management interface
Network segmentation
allIsolate router management interface to trusted network segment only
🧯 If You Can't Patch
- Replace affected router with different model or vendor
- Implement strict firewall rules blocking all access to router management interface from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via admin interface. If version is 1.1.00.032, device is vulnerable.Check Version:
Check via router web interface at http://router_ip/ or via SSH if enabledVerify Fix Applied:
Verify firmware version has been updated to a version later than 1.1.00.032📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to reset_wifi endpoint
- Suspicious command execution in system logs
- Multiple failed login attempts followed by successful access
Network Indicators:
- Unusual outbound connections from router
- DNS hijacking patterns
- Unexpected SSH/Telnet connections from router
SIEM Query:
source="router_logs" AND (uri="/reset_wifi" OR command="*;*" OR command="*|*")