CVE-2024-29671 in FLATA AX1500 Router
Summary
by MITRE • 12/17/2024
Buffer Overflow vulnerability in NEXTU FLATA AX1500 Router v.1.0.2 allows a remote attacker to execute arbitrary code via the POST request handler component.
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Analysis
by VulDB Data Team • 12/17/2024
The CVE-2024-29671 vulnerability represents a critical buffer overflow flaw within the NEXTU FLATA AX1500 router firmware version 1.0.2, exposing a remote code execution vector that poses significant security risks to network infrastructure. This vulnerability specifically affects the POST request handler component, which processes incoming web requests to the router's administrative interface. The flaw stems from inadequate input validation and memory management within the router's web server implementation, creating a condition where maliciously crafted POST requests can overwrite adjacent memory locations beyond the allocated buffer boundaries.
The technical exploitation of this vulnerability follows a classic buffer overflow pattern where an attacker crafts a specially formatted POST request containing excessive data that exceeds the intended buffer capacity. When the router's web server processes this malformed request, the overflow corrupts adjacent memory regions including return addresses and control data, potentially allowing an attacker to redirect execution flow to malicious code injected within the overflow payload. This type of vulnerability falls under CWE-121, which specifically addresses stack-based buffer overflow conditions, and can be categorized under the broader ATT&CK technique T1059.007 for command and script injection. The vulnerability's remote nature eliminates the need for physical access or local network presence, making it particularly dangerous as attackers can exploit it from anywhere on the internet.
The operational impact of CVE-2024-29671 extends far beyond simple denial of service conditions, as successful exploitation can result in complete system compromise and persistent backdoor access. Once executed, the attacker gains full administrative privileges over the router, enabling them to modify network configurations, redirect traffic through malicious proxies, establish persistent access points, and potentially use the compromised device as a pivot point for attacking internal network segments. The router's position as a gateway device makes it an ideal target for attackers seeking to establish long-term network access while remaining undetected. This vulnerability particularly affects small to medium business networks where routers may not be regularly updated or monitored, creating extended attack surfaces that can persist for months or years without detection.
Mitigation strategies for CVE-2024-29671 require immediate action from network administrators to address the vulnerability through firmware updates provided by the manufacturer. The most effective immediate measure involves disabling unnecessary web management interfaces and restricting access to the router's administrative ports through firewall rules and network segmentation. Organizations should implement network monitoring solutions capable of detecting anomalous POST request patterns and excessive data payloads that may indicate exploitation attempts. Additionally, regular security assessments should include vulnerability scanning of network devices to identify unpatched systems, while network access control policies should be enforced to limit administrative access to only trusted network segments. The remediation process must also consider the broader context of the device's role in the network infrastructure, potentially requiring complete network reconfiguration if the device has been compromised. Security teams should also establish incident response procedures specifically addressing router compromise scenarios, as the nature of this vulnerability means that even successful patching may not fully restore system integrity if the device has already been compromised.