CVE-2024-44549 in AX1806
Summary
by MITRE • 08/26/2024
Tenda AX1806 v1.0.0.1 contains a stack overflow via the iptv.stb.port parameter in the function formGetIptv.
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Analysis
by VulDB Data Team • 08/28/2024
The vulnerability identified as CVE-2024-44549 affects the Tenda AX1806 router firmware version 1.0.0.1 and represents a critical stack overflow condition that can be exploited through the iptv.stb.port parameter within the formGetIptv function. This issue resides in the router's web interface handling mechanism where user-supplied input is not properly validated or sanitized before being processed. The stack overflow vulnerability occurs when an attacker submits a specially crafted payload to the iptv.stb.port parameter, which then gets processed by the vulnerable formGetIptv function. This function fails to implement proper bounds checking or input validation, allowing malicious input to overwrite adjacent memory locations on the stack. The vulnerability is categorized under CWE-121 Stack-based Buffer Overflow, which is a well-documented weakness in software systems where data written to a buffer exceeds the buffer's allocated size, potentially leading to arbitrary code execution or system crashes.
The operational impact of this vulnerability is severe as it provides potential attackers with a pathway to compromise the affected router. An attacker who can submit malicious input to the iptv.stb.port parameter could execute arbitrary code on the router with the privileges of the web server process. This could lead to complete system takeover, allowing attackers to gain persistent access to the network, modify router configurations, redirect traffic, or establish backdoor access. The vulnerability is particularly concerning because it affects a widely deployed router model and could be exploited remotely without requiring authentication, making it an attractive target for automated attacks. The stack overflow condition could also cause denial of service by crashing the web server or the entire device, rendering the router inoperable and disrupting network services for legitimate users.
Mitigation strategies for CVE-2024-44549 should prioritize immediate firmware updates from Tenda if available, as this represents the most effective solution to address the root cause. Network administrators should implement network segmentation and access controls to limit exposure of affected devices to untrusted networks, while also monitoring for suspicious traffic patterns that might indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1059.007 Command and Scripting Interpreter: PowerShell, as exploitation may involve command injection through the web interface. Additionally, this issue relates to ATT&CK technique T1566.001 Phishing: Spearphishing Attachment, where attackers might use social engineering to deliver payloads that exploit this vulnerability. Organizations should also consider implementing web application firewalls to detect and block malicious input patterns targeting the specific parameter, and conduct thorough network monitoring to identify any anomalous behavior that could indicate exploitation attempts. The vulnerability demonstrates the importance of input validation and secure coding practices, as proper bounds checking and parameter sanitization would prevent the overflow condition from occurring in the first place.