CVE-2024-11056 in AC10
Summary
by MITRE • 11/10/2024
A vulnerability, which was classified as critical, was found in Tenda AC10 16.03.10.13. Affected is the function FUN_0046AC38 of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 11/14/2024
The vulnerability identified as CVE-2024-11056 represents a critical stack-based buffer overflow flaw in the Tenda AC10 wireless router firmware version 16.03.10.13. This vulnerability specifically affects the function FUN_0046AC38 located within the /goform/WifiExtraSet file, which handles wireless security configuration parameters. The flaw manifests when processing the wpapsk_crypto argument, indicating a dangerous programming error that allows attackers to manipulate memory layout through crafted input data. The affected device operates with a web-based management interface that exposes this vulnerable endpoint to remote exploitation, making it particularly dangerous for widespread deployment scenarios.
The technical exploitation of this vulnerability leverages a classic stack buffer overflow condition where an attacker can provide input data exceeding the allocated buffer space for the wpapsk_crypto parameter. This overflow occurs in the FUN_0046AC38 function, which suggests improper input validation and bounds checking mechanisms. The stack-based nature of the vulnerability means that the overflow can overwrite adjacent memory locations including return addresses, potentially enabling arbitrary code execution or system crashes. According to CWE classification, this represents a CWE-121: Stack-based Buffer Overflow, which is a well-documented and highly dangerous vulnerability type that can lead to complete system compromise. The attack vector is remote, meaning no physical access or local network presence is required for exploitation, significantly increasing the attack surface and potential impact.
The operational impact of this vulnerability extends beyond simple device compromise, as it affects the core wireless security functionality of the Tenda AC10 router. An attacker who successfully exploits this vulnerability could gain unauthorized access to the router's management interface, potentially leading to complete network takeover. The exploitation may result in persistent backdoor access, network traffic interception, or modification of wireless security settings. This vulnerability directly impacts the CIA triad by compromising confidentiality, integrity, and availability of the affected network infrastructure. The public disclosure of the exploit means that threat actors can readily leverage this vulnerability without requiring advanced technical skills, making it particularly dangerous for organizations with unpatched Tenda AC10 devices in their network infrastructure. The router's role as a primary network gateway makes this vulnerability a critical threat to enterprise and home network security.
Mitigation strategies for CVE-2024-11056 should prioritize immediate firmware updates from Tenda, as this represents the most effective defense against the known exploit. Network administrators should implement network segmentation and access controls to limit the potential impact if exploitation occurs, following ATT&CK framework principles for network defense and lateral movement prevention. Additional protective measures include disabling unnecessary web management interfaces, implementing strong firewall rules, and monitoring for unusual network traffic patterns that might indicate exploitation attempts. The vulnerability highlights the importance of secure coding practices, particularly around input validation and buffer management, as recommended by industry standards. Organizations should also consider implementing network monitoring solutions that can detect anomalous behavior in wireless network configurations, as the vulnerability specifically targets wireless security parameters that are critical for network integrity and security. Regular vulnerability assessments and penetration testing should be conducted to identify similar flaws in other network infrastructure components, ensuring comprehensive security posture maintenance across all network assets.