CVE-2024-57228
📋 TL;DR
This CVE describes a command injection vulnerability in Linksys E7350 routers where an attacker can execute arbitrary commands via the iface parameter in the vif_disable function. This affects Linksys E7350 router users running vulnerable firmware versions, potentially allowing remote code execution on the device.
💻 Affected Systems
- Linksys E7350
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router allowing attacker to execute arbitrary commands, modify configurations, intercept network traffic, and potentially pivot to internal network devices.
Likely Case
Attacker gains control of the router, modifies DNS settings, intercepts traffic, or installs persistent backdoors.
If Mitigated
Limited impact if router is behind firewall with restricted management interface access and proper network segmentation.
🎯 Exploit Status
Exploitation requires access to the management interface. The vulnerability is in a specific function parameter that may require authentication to reach.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Linksys for latest firmware version
Vendor Advisory: https://www.linksys.com/support/
Restart Required: Yes
Instructions:
1. Log into Linksys router web interface. 2. Navigate to Administration > Firmware Upgrade. 3. Check for updates and apply latest firmware. 4. Reboot router after update completes.
🔧 Temporary Workarounds
Restrict Management Interface Access
allLimit access to router management interface to trusted IP addresses only
Disable Remote Management
allTurn off remote management features if not required
🧯 If You Can't Patch
- Isolate router on separate VLAN with strict firewall rules
- Implement network monitoring for suspicious router management traffic
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface under Administration > Firmware UpgradeCheck Version:
Login to router web interface and check firmware versionVerify Fix Applied:
Verify firmware version is updated beyond 1.1.00.032📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in router logs
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Unusual outbound connections from router
- DNS changes or unexpected proxy configurations
SIEM Query:
source="router_logs" AND (command="*vif_disable*" OR command="*iface*")