CVE-2024-57222
📋 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_cancel_wps function. This affects Linksys E7350 router users running vulnerable firmware. Successful exploitation could lead to complete router 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, modify router settings, install persistent malware, and pivot to internal network devices.
Likely Case
Router takeover enabling network traffic monitoring, DNS hijacking, and credential theft from connected devices.
If Mitigated
Limited impact if router is behind firewall with restricted administrative access and network segmentation.
🎯 Exploit Status
Exploit requires access to router's administrative interface; command injection is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Linksys support site for firmware updates. 2. If update available, download and install via router web interface. 3. Reboot router after update.
🔧 Temporary Workarounds
Restrict Administrative Access
allLimit router administrative interface access to trusted IP addresses only
Disable WPS
allDisable Wi-Fi Protected Setup feature if not needed
🧯 If You Can't Patch
- Isolate router on separate network segment with strict firewall rules
- Implement network monitoring for unusual router administrative access patterns
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface: Settings > Administration > Firmware UpdateCheck Version:
Not applicable - check via web interfaceVerify Fix Applied:
Verify firmware version is newer than 1.1.00.032📡 Detection & Monitoring
Log Indicators:
- Unusual administrative login attempts
- Suspicious commands in router logs
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from router
- DNS queries to malicious domains from router
SIEM Query:
source="router_logs" AND ("apcli_cancel_wps" OR "ifname" AND shell_metacharacters)