CVE-2023-43481 in TCL Browser TV Web BrowseHere
Summary
by MITRE • 12/27/2023
An issue in Shenzhen TCL Browser TV Web BrowseHere (aka com.tcl.browser) 6.65.022_dab24cc6_231221_gp allows a remote attacker to execute arbitrary code via the com.tcl.browser.portal.browse.activity.BrowsePageActivity component.
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Analysis
by VulDB Data Team • 08/27/2024
The vulnerability identified as CVE-2023-43481 resides within the Shenzhen TCL Browser TV Web BrowseHere application, specifically targeting version 6.65.022_dab24cc6_231221_gp. This flaw manifests in the com.tcl.browser.portal.browse.activity.BrowsePageActivity component, which serves as a critical entry point for web browsing functionality on TCL smart TV devices. The vulnerability represents a significant security risk as it enables remote code execution capabilities that could be exploited by malicious actors without requiring local access to the device.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the BrowsePageActivity component. When the application processes user-provided URLs or web content through this activity, it fails to properly validate or sanitize the input parameters, creating a pathway for attackers to inject malicious code. This flaw aligns with CWE-79, which describes cross-site scripting vulnerabilities, and CWE-119, which addresses memory corruption issues that can lead to arbitrary code execution. The vulnerability essentially allows an attacker to bypass normal application security controls and execute arbitrary commands with the privileges of the affected application.
The operational impact of this vulnerability extends beyond simple remote code execution, as it fundamentally compromises the security posture of TCL smart TV devices. Attackers could leverage this vulnerability to install malicious applications, modify system configurations, access sensitive user data, or even establish persistent backdoors within the device. The remote nature of the attack means that threat actors could exploit this vulnerability from anywhere on the internet, making it particularly dangerous for consumers who may not be aware of the security risks associated with their smart television devices. This vulnerability affects not just individual users but also enterprise environments where TCL TVs might be deployed for digital signage or other business applications.
Security professionals should consider this vulnerability in the context of the MITRE ATT&CK framework, specifically mapping it to techniques such as T1059 for command and scripting interpreter usage and T1566 for phishing with malicious attachments or links. The vulnerability's exploitation could lead to broader compromise of network infrastructure, especially in environments where smart TVs are connected to corporate networks. Organizations should immediately implement network segmentation to isolate smart TV devices from critical systems and consider deploying network monitoring solutions to detect anomalous traffic patterns that might indicate exploitation attempts. Patch management should be prioritized, with immediate updates to the affected TCL Browser application or complete removal of the vulnerable component from affected devices. The vulnerability underscores the importance of secure coding practices and input validation in mobile and embedded application development, particularly for Internet of Things devices that are increasingly becoming targets for cyber attacks.