CVE-2024-57227
📋 TL;DR
This CVE describes a command injection vulnerability in Linksys E7350 routers where an attacker can execute arbitrary commands via the ifname parameter in the apcli_do_enr_pbc_wps function. This affects Linksys E7350 router users running firmware version 1.1.00.032. Successful exploitation could lead to complete device compromise.
💻 Affected Systems
- Linksys E7350
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full router compromise allowing attacker to intercept all network traffic, install persistent backdoors, pivot to internal networks, and brick the device.
Likely Case
Router takeover enabling traffic monitoring, DNS hijacking, credential theft from connected devices, and lateral movement within the network.
If Mitigated
Limited impact if network segmentation isolates the router and external access is restricted, though local network attacks remain possible.
🎯 Exploit Status
Exploitation requires access to the vulnerable function, which may require authentication or specific conditions. The GitHub repository contains technical details but no ready-to-use exploit code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Linksys for latest firmware > 1.1.00.032
Vendor Advisory: Not available in provided references
Restart Required: Yes
Instructions:
1. Log into Linksys router admin interface. 2. Navigate to Administration > Firmware Update. 3. Check for updates and install latest firmware. 4. Reboot router after update completes.
🔧 Temporary Workarounds
Disable WPS functionality
allDisable Wi-Fi Protected Setup (WPS) if not needed, as the vulnerable function is related to WPS enrollment.
Restrict administrative access
allLimit router admin interface access to specific IP addresses or disable remote administration.
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict firewall rules
- Implement network monitoring for suspicious command execution patterns
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under Administration > Firmware Update. If version is 1.1.00.032, device is vulnerable.Check Version:
Not applicable - check via web interface at http://router_ip or via SSH if enabled: cat /proc/versionVerify Fix Applied:
After updating, verify firmware version shows a version higher than 1.1.00.032 in the admin interface.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts to admin interface
- Suspicious WPS-related activity
Network Indicators:
- Unexpected outbound connections from router
- DNS queries to suspicious domains
- Unusual traffic patterns from router IP
SIEM Query:
Not provided in references - would depend on specific logging capabilities