CVE-2024-44557 in AX1806
Summary
by MITRE • 08/26/2024
Tenda AX1806 v1.0.0.1 contains a stack overflow via the iptv.stb.mode parameter in the function setIptvInfo.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 08/28/2024
The vulnerability identified as CVE-2024-44557 affects the Tenda AX1806 router firmware version 1.0.0.1, presenting a critical stack overflow condition that stems from improper input validation within the setIptvInfo function. This flaw specifically manifests when processing the iptv.stb.mode parameter, which is utilized to configure internet protocol television settings on the device. The stack overflow vulnerability represents a fundamental flaw in the router's firmware architecture that can be exploited by remote attackers to disrupt normal operations or potentially execute arbitrary code on the affected device.
The technical implementation of this vulnerability resides in the function setIptvInfo which fails to properly validate or sanitize the iptv.stb.mode parameter before processing it within the device's memory stack. When an attacker crafts a malicious input string that exceeds the allocated buffer space for this parameter, the excessive data overflows into adjacent memory locations, corrupting the stack structure and potentially allowing for arbitrary code execution. This type of vulnerability falls under the common weakness enumeration CWE-121, which categorizes stack-based buffer overflows as a critical security flaw that can lead to complete system compromise. The vulnerability is particularly concerning as it operates at the firmware level, meaning that successful exploitation could provide attackers with deep system access that extends beyond typical network boundaries.
From an operational perspective, this vulnerability poses significant risks to network security infrastructure as it enables remote code execution without requiring authentication. Attackers can leverage this flaw to gain unauthorized access to the router's administrative functions, potentially leading to complete network compromise. The impact extends beyond simple denial of service, as the vulnerability could allow attackers to modify network configurations, redirect traffic, or establish persistent backdoors within the network infrastructure. The attack surface is particularly wide given that the vulnerability is accessible through standard network protocols and does not require physical access to the device. According to the attack technique framework, this vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1068 for exploit for privilege escalation, making it a significant threat vector for advanced persistent threats targeting network infrastructure.
Mitigation strategies for CVE-2024-44557 should prioritize immediate firmware updates from Tenda, as the vendor has likely released patches addressing this specific vulnerability. Network administrators should implement network segmentation and access controls to limit exposure of affected devices to untrusted networks. Additionally, monitoring for unusual network traffic patterns or unauthorized configuration changes can help detect exploitation attempts. The implementation of input validation controls at the network boundary, such as web application firewalls, can provide additional protection layers. Organizations should also consider disabling unused network services and implementing regular security assessments to identify similar vulnerabilities in other network infrastructure components. The vulnerability underscores the importance of firmware security testing and proper input validation practices in embedded systems, particularly those handling user-provided parameters within network devices.