CVE-2024-11985

4.4 MEDIUM

📋 TL;DR

An improper input validation vulnerability in certain ASUS router models allows attackers to send specially crafted input that crashes the device. This affects users of specific ASUS router models running vulnerable firmware versions. The vulnerability requires network access to the router's management interface.

💻 Affected Systems

Products:
  • Specific ASUS router models (exact models not specified in provided information)
Versions: Specific vulnerable firmware versions (exact versions not specified in provided information)
Operating Systems: Router firmware
Default Config Vulnerable: ⚠️ Yes
Notes: Refer to ASUS Security Advisory for exact affected models and firmware versions. Default configurations with web management enabled are vulnerable.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Persistent denial of service rendering the router unusable until manually rebooted, potentially disrupting all network connectivity for connected devices.

🟠

Likely Case

Temporary service disruption requiring router reboot, causing brief network downtime for connected users.

🟢

If Mitigated

No impact if proper network segmentation and access controls prevent unauthorized access to router management interfaces.

🌐 Internet-Facing: MEDIUM - Routers with management interfaces exposed to the internet are vulnerable to remote attacks, but exploitation requires specific knowledge of vulnerable models and firmware.
🏢 Internal Only: LOW - Internal attackers with network access could exploit this, but the impact is limited to denial of service rather than data compromise.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Based on CWE-20 and CVSS 4.4, exploitation likely requires sending malformed input to specific router interfaces but doesn't require authentication.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Refer to ASUS Security Advisory for specific patched firmware versions

Vendor Advisory: https://www.asus.com/content/asus-product-security-advisory/

Restart Required: Yes

Instructions:

1. Visit ASUS support website 2. Identify your router model 3. Download latest firmware 4. Access router admin panel 5. Upload and install firmware update 6. Reboot router

🔧 Temporary Workarounds

Disable Remote Management

all

Prevent external access to router management interface

Network Segmentation

all

Restrict access to router management interface to trusted networks only

🧯 If You Can't Patch

  • Implement strict network access controls to limit who can reach the router management interface
  • Monitor router logs for crash events and implement automated alerting for service disruptions

🔍 How to Verify

Check if Vulnerable:

Check router firmware version against ASUS Security Advisory list of vulnerable versions

Check Version:

Access router web interface and check Firmware Version in Administration or System Status section

Verify Fix Applied:

Verify firmware version has been updated to patched version listed in ASUS advisory

📡 Detection & Monitoring

Log Indicators:

  • Router crash/reboot events
  • Unexpected service restarts
  • Failed login attempts to management interface

Network Indicators:

  • Unusual traffic patterns to router management ports
  • Multiple connection attempts to router web interface

SIEM Query:

source="router_logs" AND (event="crash" OR event="reboot" OR event="service_restart")

🔗 References

📤 Share & Export