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Flaw in TP-Link Gaming Router Allows Remote Attacks

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Endpoint Security
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Internet of Things Security

Unsanitized Inputs Leads to Remote Code Execution

Prajeet Nair (@prajeetspeaks) •
May 29, 2024    

Flaw in TP-Link Gaming Router Allows Remote Attacks
An Archer C5400X gaming Wi-Fi router (Image: TP-Link)

A gaming Wi-Fi router contained a zero-day that allowed a remote unauthenticated attacker to execute arbitrary code – a flaw that a static analysis cybersecurity firm attributed to insecure coding practices.

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Onekey on Monday said that it examined the firmware in the TP-Link Archer C5400X Tri-Band Gaming Router. The Chinese manufacturer released a patch for the vulnerability earlier this month.

The flaw, tracked as CVE-2024-5035, resided in a binary called rftest – which, as its name implies, tests radio frequency emissions. When executed, the binary launches a TCP server and accepts commands that start with wl or nvram.get. But router developers neglected to sanitize inputs, which allowed attackers to inject a command by using common metacharacters such as ;, ,, & and |.

“It seems the need to provide a wireless device configuration API at TP-Link had to be answered either fast or cheap, which ended up with them exposing a supposedly limited shell over the network that clients within the router could use as a way to configure wireless devices,” Onekey said.

Routers are a perennial source of risk to enterprises and home users alike. By necessity, they are constantly exposed to the internet, but they usually are not thought of except when a signal is glitchy. Routers have been avenues for exploitation by Russian military intelligence hackers, their Chinese counterparts and oodles of cybercriminal botnets.

An international law enforcement operation announced Wednesday that it took down a botnet the FBI director called likely the world’s largest yet. The 911 S5 botnet consisted of 19 million IP addresses, federal authorities said (see: FBI Says It Dismantled ‘Likely the World’s Largest Botnet’).





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    Implementing Patch Management Systems

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    Enabling Multi-Factor Authentication (MFA)

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    Automating Security Auditing and Compliance

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    Deploying Automated Data Backups and Recovery

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    Educating Employees with Security Awareness Training

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    To achieve their goal, ethical hackers immerse themselves in the expanse of security breaches, exploits, and vulnerability scenarios. They leave no stone unturned. Their goal is to protect organizations from malicious attacks, ensuring that the digital fortress remains untouchable.

    Don't underestimate the importance of ethical hacking. As the world becomes increasingly interconnected, cybersecurity has never been more pressing. According to a report by Emergen Research, the cybersecurity industry is expected to expand at a compound annual growth rate (CAGR) of 12.0% to 13.4% from 2022 to 2030. This surge in demand reflects the critical importance of ethical hackers in fortifying digital infrastructure against the relentless onslaught of cyber threats.

    Embracing the Journey: Continuous Learning and Certification for Ethical Hackers

    Becoming an ethical hacker requires diverse skills and knowledge. Understanding the types of hackers is crucial, as it provides insights into how they operate. Armed with this knowledge, ethical hackers delve into cutting-edge tools and techniques. They leverage their skills to identify vulnerabilities and devise countermeasures.

    The responsibilities of an ethical hacker transcend merely identifying weaknesses. They also recommend solutions and implement robust security measures. Their expertise helps organizations fortify their defenses, minimize breaches, and protect sensitive data from falling into the wrong hands.

    The Tools of Ethical Hacking

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    WireShark, a network protocol analyzer, is another indispensable tool for ethical hackers. It allows them to capture and examine network traffic, providing deep insights into the packets traversing the network. With WireShark, ethical hackers can scrutinize individual packets, analyze network protocols, and identify suspicious or malicious activity. This tool enables them to detect anomalies, trace the origin of potential security breaches, and assess the security posture of the network.

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    References:

    "Cybersecurity Market, By Component (Hardware, Solution, Service), By Security Type, By Solution, By Application (IT & Telecom, Retail, BFSI, Healthcare, Defense & Government, Manufacturing, Energy, Others), By Region Forecast to 2032". Www.Emergenresearch.Com, 2023, https://www.emergenresearch.com/industry-report/cyber-security-market. Accessed 25 May 2023.

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    PSL’s Easy Guide to Understanding Cybersecurity

    The world of cybersecurity can often feel like a maze of technobabble and obscure acronyms. Yet in an era where our lives increasingly depend on digital infrastructure, it's important to have a basic understanding of the terminology involved. Learning about cybersecurity can help you avoid common mistakes and limit the chance of becoming a victim of these crimes.

    Here is an overview of common cybersecurity terms.

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    Malware is any malicious software that can damage or infiltrate computers without the user's consent.

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    Worm

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    Trojan

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    Ransomware

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    Spyware

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    3) Phishing

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    4) Firewall

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    5) VPN (Virtual Private Network)

    A VPN masks your internet protocol (IP) address to make your online actions nearly untraceable. VPN services establish encrypted connections to provide much greater privacy while using the internet.

    6) Encryption

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    7) Two-Factor Authentication (2FA)

    2FA is a common security process in which users must provide two different authentication factors to gain access to an account. For example, in addition to a password, you might also need to enter a code sent to your phone.

    8) Darknet/Dark Web

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    9) Data Breach

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    10) Botnet

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    Closing Thoughts

    Understanding cybersecurity is not just for the tech-savvy; it's for everyone. We are all potential targets for cyber threats, and comprehension of basic cybersecurity terminology can make a significant difference in safeguarding ourselves and our digital assets.

    Employing cybersecurity measures also helps to keep your digital data safe. This might include using a VPN, enabling two-factor authentication, or simply being wary of suspicious emails to prevent phishing attacks.

    Ultimately, it's not necessary for everyone to be a cybersecurity expert, but a basic understanding of the key terms can be an empowering first step in better securing your digital life. This newfound knowledge can provide you the confidence to navigate the online world with more safety and assurance.