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TP-Link VN020 F3v(T) TT_V6.2.1021) - DHCP Stack Buffer Overflow

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Mentioned vulnerabilities

Severity
Medium

Rated by Threat Radar

Data as of 11 Jun 2025, 21:13 UTC

What to do

AI-suggested

1. Immediate network segmentation to isolate vulnerable TP-Link VN020-F3v(T) routers from critical infrastructure and sensitive systems, limiting exposure to DHCP traffic from untrusted sources. 2. Disable or restrict DHCP server functionality on affected routers if possible, or replace the device with a non-vulnerable model. 3. Monitor network traffic for anomalous DHCP DISCOVER packets with unusually large hostname options or malformed DHCP options indicative of exploit attempts. 4. Implement DHCP snooping and filtering on switches to block malformed or suspicious DHCP packets before reaching the router. 5. Engage with TP-Link and ISPs (Tunisie Telecom, Topnet) to obtain firmware updates or patches addressing CVE-2024-11237; if unavailable, consider vendor support escalation. 6. Deploy network intrusion detection systems (NIDS) with signatures for this exploit pattern to alert on exploitation attempts. 7. Conduct regular audits of network devices to inventory vulnerable hardware and plan phased replacement or upgrades. 8. Educate network administrators on this specific vulnerability and ensure incident response plans include DHCP service disruption scenarios.

Description

TP-Link VN020 F3v(T) TT_V6.2.1021) - DHCP Stack Buffer Overflow

Indicators of compromise

Exploit source code

Exploit code for TP-Link VN020 F3v(T) TT_V6.2.1021) - DHCP Stack Buffer OverflowC/C++ · 10,739 characters
/*
 * Exploit Title: TP-Link VN020 F3v(T) TT_V6.2.1021) - DHCP Stack Buffer Overflow
 * Date: 10/20/2024
 * Exploit Author: Mohamed Maatallah
 * Vendor Homepage: https://www.tp-link.com
 * Version: TT_V6.2.1021 (VN020-F3v(T))
 * Tested on: VN020-F3v(T) Router (Hardware Version 1.0)
 * CVE: CVE-2024-11237
 * Category: Remote

 * Technical Details:
 * -----------------
 * - Triggers multiple memory corruption vectors in DHCP parsing
 * - Primary vector: Stack overflow via oversized hostname (127 b…

References

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