CVE-2021-46419 Scanner

The Telesquare TLR-2855KS6 is a firmware system widely used in industrial environments for managing and controlling networked devices. This product is implemented by technology operators seeking reliable network connectivity solutions. Its capacity for high performance and integration with existing industrial systems makes it a preferred choice in automating and managing large-scale network infrastructure. Businesses use this tool to ensure comprehensive management and monitoring of their network systems with minimal manual intervention. The TLR-2855KS6 plays a crucial role in secure data transmission, configuration management, and system diagnostics. It is an essential component for businesses looking to maintain operational uptime and efficient resource utilization.

The Arbitrary File Deletion vulnerability in Telesquare TLR-2855KS6 is a critical security flaw. This vulnerability allows unauthorized users to delete any file on the system, jeopardizing the integrity and availability of essential data. It occurs due to improper access control and authentication mechanisms within the firmware, specifically allowing DELETE requests without verification. This flaw makes it possible for attackers to leverage the vulnerability, causing potential destruction or irreversible loss of system-critical files. Essentially, it puts at risk both the data stored on the device and the functionality of the firmware itself, leading to possible downtime or severe operational disruptions.

Technically, the vulnerability is exploited via the DELETE method in the HTTP request to the firmware's underlying file management system. The parameter at risk involves direct interaction with files located within the `/cgi-bin/` directory. An attacker, without needing any prior authentication, can execute DELETE commands to arbitrarily remove files and scripts from the system. The vulnerability hinges on the improper validation of users and session control, allowing the DELETE method to execute freely. This lack of sufficient safeguarding against unauthorized file operations makes it a severe exploit vector that requires immediate attention.

The exploitation of this vulnerability can result in severe repercussions for affected systems. Malicious actors gaining the ability to delete system-critical files can lead to significant disruptions in network operations. This could cause operational outages, adversely affecting businesses relying on the TLR-2855KS6 for their network management. In extreme scenarios, it might render the device non-operational or necessitate complete firmware reinstallations. Furthermore, such vulnerabilities can be leveraged as a foothold for launching further attacks against the network infrastructure, increasing potential security and financial risks for the organization.

REFERENCES

• https://nvd.nist.gov/vuln/detail/cve-2021-46419
• http://packetstormsecurity.com/files/166675/Telesquare-TLR-2855KS6-Arbitrary-File-Deletion.html