CVE-2024-25373 in AC10 V4
Summary
by MITRE • 02/15/2024
Tenda AC10V4.0 V16.03.10.20 was discovered to contain a stack overflow via the page parameter in the sub_49B384 function.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 11/12/2024
The vulnerability identified as CVE-2024-25373 affects the Tenda AC10V4.0 router firmware version V16.03.10.20 and represents a critical stack overflow condition that arises from improper input validation within the web interface handling code. This flaw exists within the sub_49B384 function which processes HTTP requests containing the page parameter, creating an exploitable condition that can be leveraged by remote attackers to execute arbitrary code on the affected device. The stack overflow vulnerability stems from insufficient bounds checking when processing user-supplied input through the web administration interface, allowing an attacker to overwrite adjacent memory locations on the stack.
The technical implementation of this vulnerability demonstrates a classic buffer overflow scenario where the page parameter passed to the sub_49B384 function lacks proper validation mechanisms to prevent excessive input lengths. When an attacker sends a specially crafted HTTP request containing an overly long page parameter value, the function fails to properly sanitize the input before processing, leading to stack memory corruption. This type of vulnerability aligns with CWE-121 which describes stack-based buffer overflow conditions, and the attack pattern corresponds to techniques described in the MITRE ATT&CK framework under T1203 for legitimate program exploitation. The vulnerability exists at the application layer within the router's web server component, specifically in how it handles HTTP request parameters without adequate input sanitization.
The operational impact of this vulnerability extends beyond simple denial of service scenarios as it creates a potential path for complete system compromise. An attacker who successfully exploits this stack overflow can gain unauthorized access to the router's administrative interface and potentially execute arbitrary commands with the privileges of the web server process. This could result in full network compromise, as the router serves as a gateway for all network traffic, allowing attackers to modify routing tables, intercept communications, or establish persistent access points within the network. The vulnerability affects the confidentiality, integrity, and availability of the network infrastructure, making it particularly dangerous for enterprise and home network environments where these devices are commonly deployed.
Mitigation strategies for CVE-2024-25373 should prioritize immediate firmware updates from Tenda to address the root cause of the stack overflow vulnerability. Network administrators should implement network segmentation to limit the attack surface and monitor for suspicious traffic patterns that might indicate exploitation attempts. Additionally, deploying intrusion detection systems that can identify malformed HTTP requests containing excessive parameter lengths can provide early warning of potential exploitation attempts. The vulnerability highlights the importance of secure coding practices including input validation, bounds checking, and proper memory management as outlined in the OWASP Secure Coding Practices. Organizations should also consider disabling unnecessary web management interfaces when not actively required and implement strong authentication mechanisms to reduce the attack surface. Regular security assessments of network infrastructure components and maintaining up-to-date vulnerability management processes are essential to prevent exploitation of similar vulnerabilities in other network devices.