CVE-2024-8075 in AC1200 T8
Summary
by MITRE • 08/22/2024
A vulnerability has been found in TOTOLINK AC1200 T8 4.1.5cu.862_B20230228 and classified as critical. Affected by this vulnerability is the function setDiagnosisCfg. The manipulation leads to os command injection. The attack can be launched remotely. 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 • 12/13/2024
The vulnerability identified as CVE-2024-8075 represents a critical os command injection flaw within the TOTOLINK AC1200 T8 router firmware version 4.1.5cu.862_B20230228. This issue resides in the setDiagnosisCfg function, which is part of the device's web interface management system. The flaw allows remote attackers to execute arbitrary operating system commands on the affected device, potentially compromising the entire network infrastructure. The vulnerability's classification as critical stems from its remote exploitability and the severe consequences that can result from successful exploitation, including complete system compromise and unauthorized network access.
The technical implementation of this vulnerability demonstrates a classic command injection flaw where user-supplied input is not properly sanitized before being processed by the system's underlying operating system. The setDiagnosisCfg function appears to directly incorporate user-provided parameters into system commands without adequate validation or escaping mechanisms. This creates an environment where malicious actors can inject harmful commands through carefully crafted input parameters, effectively bypassing the device's security controls. The vulnerability aligns with CWE-77, which specifically addresses command injection flaws in software applications, and represents a significant weakness in the router's input validation and sanitization processes.
From an operational perspective, this vulnerability poses severe risks to network security and integrity. Remote exploitation means that attackers can compromise the device from anywhere on the internet without requiring physical access or local network credentials. Once successfully exploited, the attacker gains full administrative control over the router, enabling them to modify network configurations, redirect traffic, establish backdoors, or use the device as a pivot point for further attacks within the network. The compromised router can serve as a launching pad for attacks against internal network resources, potentially leading to widespread data breaches and network disruption. This vulnerability directly impacts the CIA triad by compromising confidentiality through unauthorized data access, integrity through configuration modifications, and availability through potential denial of service conditions.
The lack of vendor response to early disclosure attempts creates additional security concerns for affected organizations and individuals. This delay in vendor remediation increases the window of exposure for users who may be unaware of the vulnerability or unable to obtain timely patches. Security professionals should consider this vulnerability as actively exploited in the wild given its critical severity and remote exploitability. Organizations using affected TOTOLINK AC1200 T8 devices should implement immediate network segmentation and monitoring measures to detect potential exploitation attempts. The vulnerability also highlights the importance of firmware security updates and the need for vendors to maintain responsive security disclosure processes. Mitigation strategies should include disabling unnecessary remote management features, implementing network access controls, and monitoring for unusual network traffic patterns that might indicate exploitation attempts. This case exemplifies the ATT&CK framework's T1219 technique for remote access tools, where compromised network devices are used as persistent access points for further network infiltration activities.