CVE-2024-30630 in FH1205
Summary
by MITRE • 03/29/2024
Tenda FH1205 v2.0.0.7(775) has a stack overflow vulnerability in the time parameter from saveParentControlInfo function.
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Analysis
by VulDB Data Team • 08/28/2024
The vulnerability identified as CVE-2024-30630 affects the Tenda FH1205 v2.0.0.7(775) router firmware, representing a critical stack overflow condition within the saveParentControlInfo function. This flaw resides in the device's web interface handling of time parameters, creating a potential pathway for remote code execution and system compromise. The vulnerability manifests when the router processes user-supplied time data through the saveParentControlInfo function, which fails to properly validate or sanitize input lengths before processing. The stack overflow occurs due to insufficient bounds checking, allowing an attacker to overflow the allocated stack buffer and potentially overwrite adjacent memory regions including return addresses and function pointers.
This vulnerability directly maps to CWE-121 Stack-based Buffer Overflow, a well-documented weakness in software security that occurs when a program writes data beyond the boundaries of a fixed-length stack buffer. The affected Tenda device operates within the consumer and small office networking space, where such vulnerabilities can be exploited by remote attackers without requiring authentication or physical access to the device. The exploitation of this vulnerability could enable attackers to execute arbitrary code on the affected device, potentially leading to complete system compromise, persistent backdoor installation, or use as a pivot point for attacking other devices within the local network.
The operational impact of this vulnerability extends beyond simple device compromise, as it represents a significant risk to network security and privacy. Attackers could leverage this flaw to gain unauthorized access to the router's administrative interface, modify network configurations, intercept network traffic, or establish persistent access to the local network. The vulnerability's remote exploitability means that threat actors could target these devices from anywhere on the internet, making it particularly dangerous for widespread deployment. Network administrators should consider this vulnerability as part of the broader ATT&CK framework's TA0001 Initial Access and TA0003 Persistence tactics, where attackers can establish footholds through unpatched network infrastructure devices.
Mitigation strategies for CVE-2024-30630 should prioritize immediate firmware updates from Tenda, as the vendor has likely released patches addressing this specific stack overflow condition. Network segmentation and firewall rules can provide temporary protection by blocking unauthorized access to the router's administrative interfaces and limiting communication between the device and external networks. Additionally, implementing network monitoring to detect unusual traffic patterns or unauthorized access attempts can help identify potential exploitation attempts. Security teams should also consider disabling unnecessary services and features on the affected device, particularly those related to parental control functionality that may be vulnerable to exploitation. The vulnerability underscores the importance of firmware security testing and regular security assessments for network infrastructure devices, as many consumer-grade routers lack robust input validation mechanisms that could prevent such buffer overflow conditions from occurring in the first place.