CVE-2024-9565 – A critical buffer overflow vulnerability in D-L... (How to Fix)

📋 TL;DR

A critical buffer overflow vulnerability in D-Link DIR-605L routers allows remote attackers to execute arbitrary code by manipulating the curTime parameter in the formSetPassword function. This affects D-Link DIR-605L firmware version 2.13B01 BETA. Successful exploitation could lead to complete device compromise.

💻 Affected Systems

Products:

D-Link DIR-605L

Versions: 2.13B01 BETA

Operating Systems: Embedded router firmware

Default Config Vulnerable: ⚠️ Yes

Notes: Only affects the specific beta firmware version. Production versions may not be vulnerable.

📦 What is this software?

Dir 605l Firmware by Dlink

View all CVEs affecting Dir 605l Firmware →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to full router compromise, credential theft, network pivoting, and persistent backdoor installation.

🟠

Likely Case

Router takeover enabling traffic interception, DNS manipulation, and network disruption.

🟢

If Mitigated

Limited impact if device is behind firewall with restricted WAN access and strong network segmentation.

🌐 Internet-Facing: HIGH - Attack can be launched remotely without authentication, making internet-exposed devices immediate targets.

🏢 Internal Only: MEDIUM - Internal attackers could exploit this, but requires network access to the router's management interface.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploit details are publicly available on GitHub, making this easily weaponizable by attackers.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: https://www.dlink.com/

Restart Required: Yes

Instructions:

1. Check D-Link website for firmware updates
2. If update available, download and flash firmware
3. Factory reset router after update
4. Reconfigure with secure settings

🔧 Temporary Workarounds

Disable Remote Management

all

Prevent external access to router management interface

Network Segmentation

all

Isolate router management interface to trusted network segment

🧯 If You Can't Patch

Replace affected router with supported model
Implement strict firewall rules blocking all WAN access to router management ports

🔍 How to Verify

Check if Vulnerable:

Check router firmware version in web interface. If version is 2.13B01 BETA, device is vulnerable.

Check Version:

Check via router web interface at 192.168.0.1 or 192.168.1.1 under System Status or Firmware section

Verify Fix Applied:

Verify firmware version has changed from 2.13B01 BETA to a newer version.

📡 Detection & Monitoring

Log Indicators:

Multiple POST requests to /goform/formSetPassword with abnormal curTime parameters
Router crash/reboot logs

Network Indicators:

Unusual traffic patterns from router
Exploit payloads in HTTP requests to router management interface

SIEM Query:

http.url:"/goform/formSetPassword" AND http.method:POST AND http.param.curTime:*

📊 Metadata

CVE ID: CVE-2024-9565

CVSS v3 Score: 8.8 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-120

Published: October 7, 2024

Last Updated: October 8, 2024

🔗 References

https://github.com/abcdefg-png/IoT-vulnerable/blob/main/D-Link/DIR-605L/formSetPassword.md Exploit,Third Party Advisory
https://vuldb.com/?ctiid.279373 Permissions Required
https://vuldb.com/?id.279373 Third Party Advisory
https://vuldb.com/?submit.413924 Third Party Advisory
https://www.dlink.com/ Product

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🔗 Related Vulnerabilities

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