CVE-2024-7151 in Tenda
Summary
by MITRE • 07/27/2024
A vulnerability was found in Tenda O3 1.0.0.10(2478). It has been declared as critical. This vulnerability affects the function fromMacFilterSet of the file /goform/setMacFilter. The manipulation of the argument remark leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. VDB-272554 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 10/02/2024
The vulnerability identified as CVE-2024-7151 represents a critical stack-based buffer overflow flaw in the Tenda O3 router firmware version 1.0.0.10(2478). This issue resides within the fromMacFilterSet function of the /goform/setMacFilter file, which handles MAC address filtering configurations for the device. The vulnerability manifests when processing the remark argument parameter, creating an exploitable condition that allows attackers to manipulate memory layout through crafted input data. The attack vector is remotely accessible, meaning malicious actors can exploit this flaw without physical access to the device, making it particularly dangerous in networked environments. This vulnerability has been actively disclosed and is known to have public exploit code available, significantly increasing the risk of exploitation across affected installations. The lack of vendor response to early disclosure attempts compounds the severity of this issue, leaving users without official patches or mitigation guidance from the manufacturer.
The technical exploitation of this buffer overflow vulnerability follows established patterns within the cybersecurity landscape, with the flaw mapping directly to CWE-121 Stack-based Buffer Overflow, which is classified as a critical weakness in software security. Attackers can leverage this vulnerability to execute arbitrary code on the affected device by carefully crafting the remark parameter to exceed the allocated stack buffer space, potentially leading to complete system compromise. The remote accessibility of this vulnerability aligns with ATT&CK technique T1210 Exploitation of Remote Services, where adversaries target network-accessible services to gain unauthorized access. The affected Tenda O3 device, when running the vulnerable firmware, becomes a potential entry point for attackers seeking to establish persistent access to network infrastructure, particularly in environments where such devices are deployed without proper network segmentation or security controls. The nature of the vulnerability suggests that successful exploitation could result in complete device takeover, allowing attackers to modify network configurations, intercept traffic, or use the device as a pivot point for further attacks within the network.
The operational impact of CVE-2024-7151 extends beyond simple device compromise, as it represents a significant threat to network security infrastructure. Network administrators face the challenge of securing potentially thousands of affected devices across various deployments, from residential networks to small business environments where Tenda routers are commonly deployed. The vulnerability's classification as critical indicates that it could enable attackers to perform sophisticated attacks including but not limited to network reconnaissance, traffic interception, or use of the compromised device as a launching point for broader network attacks. Organizations using Tenda O3 routers should immediately assess their network exposure and implement network segmentation to limit the potential damage from successful exploitation. The absence of vendor response creates an urgent need for alternative mitigation strategies including firmware updates from third-party sources, network monitoring for suspicious activity, and potentially disabling the affected functionality until a proper patch can be obtained. This vulnerability demonstrates the critical importance of maintaining current firmware versions and implementing robust security monitoring practices to detect and respond to similar threats in network infrastructure devices.