CVE-2024-28041
📋 TL;DR
CVE-2024-28041 is a command injection vulnerability in HGW BL1500HM routers that allows network-adjacent unauthenticated attackers to execute arbitrary commands. This affects HGW BL1500HM devices running firmware version 002.001.013 and earlier. Attackers on the same local network can exploit this to gain control of affected routers.
💻 Affected Systems
- HGW BL1500HM
⚠️ 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.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of router allowing attacker to intercept all network traffic, modify DNS settings, install persistent malware, pivot to internal network devices, and potentially disrupt internet connectivity.
Likely Case
Router takeover leading to man-in-the-middle attacks, credential theft, network reconnaissance, and potential lateral movement to connected devices.
If Mitigated
Limited impact if network segmentation isolates the router management interface and strict access controls prevent unauthorized network access.
🎯 Exploit Status
Exploitation requires network adjacency but no authentication. Technical details are publicly disclosed in JVN advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware version 002.001.014 or later
Vendor Advisory: https://www.au.com/support/service/internet/guide/modem/bl1500hm/firmware/
Restart Required: Yes
Instructions:
1. Log into router admin interface. 2. Navigate to firmware update section. 3. Download latest firmware from vendor site. 4. Upload and apply firmware update. 5. Reboot router after update completes.
🔧 Temporary Workarounds
Network Segmentation
allIsolate router management interface to separate VLAN or restrict access to trusted management hosts only.
Access Control Lists
allImplement firewall rules to restrict access to router management interface from unauthorized network segments.
🧯 If You Can't Patch
- Replace affected router with updated model or different vendor product
- Implement strict network segmentation to isolate router from untrusted devices
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via admin interface. If version is 002.001.013 or earlier, device is vulnerable.Check Version:
Login to router admin interface and check firmware version in system status or about page.Verify Fix Applied:
Confirm firmware version is 002.001.014 or later after applying update.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in router logs
- Multiple failed authentication attempts followed by successful access
- Unexpected configuration changes
Network Indicators:
- Unusual outbound connections from router
- DNS hijacking or unexpected proxy settings
- Traffic redirection to suspicious IPs
SIEM Query:
source="router_logs" AND (command="*;*" OR command="*|*" OR command="*`*" OR command="*$(*")