| Category | Cars |
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| Created | 2019-11-23 | ||||
| Owner | freemexy | ||||
| Title | What is a buffer overflow attack? | ||||
| Description | What is a buffer overflow attack? Hackers have been exploiting the buffer overflow vulnerability for over 30 years. It has allowed them to take control of users’ devices and even disrupt internet connections all over the world. The recent Whatsapp attack that injected malware into users’ devices has also proven that this type of attack is still relevant to this day. Find out what a buffer overflow attack is and how to protect yourself. What is a buffer and buffer overflow? To understand what a buffer overflow attack is and how it works, it's important to first understand what a buffer does. A buffer is a temporary and limited data storage location that is used to move data from one place to another. Buffers are used for input and output control, like for your keyboard and speakers, as well as for software like Photoshop. Programs usually have thousands of buffers that help them run smoothly. You can imagine a buffer as a rollercoaster. It can only accept a certain number of people (or data), and once the ride is over, or the data is transferred, it can take on more people. It works in FIFO (first in, first out) order, meaning that it inputs and outputs the data in the order it arrived. Buffers are usually stored in your RAM or sometimes written in your physical drive. Buffer overflow, also called buffer overrun, happens when the input data goes over the memory allocated for the buffer and overwrites data into the other areas of the program not designed to store it. If the rollercoaster has 6 seats, an overflow is when 7 or more people get on. If there is too much data headed into the buffer, your program might slow down or crash, or you might see incorrect results or memory access errors. It also allows hackers to exploit vulnerabilities and perform buffer overflow attacks. What is a buffer overflow attack? It’s an attack where a hacker uses the chaos caused by a buffer overflow to insert malicious code into sensitive areas. This allows an attacker to execute any command or change how the program functions. They may also gain access to the user's device. Buffer overflow attack examples Hackers have been using buffer overflow bugs to cause havoc all over the world for 30 years. However, it’s still almost as relevant now as it was back in the ‘80s. Let’s have a look at the most famous buffer overflow attacks. How to prevent buffer overflow attacks Buffer overflows usually happen due to software development mistakes. For example: The storage needed for the application can be underestimated by the developers and programmers; Programmers might overestimate how much data is already in a buffer and overflow it; Data is sent to the wrong buffer; Using the C/C++ programming languages, which are more susceptible to buffer overflows as they do not have built-in protection; Failing to regularly test whether the data uploaded is within the boundaries of the buffer. The most reliable way to protect applications and devices from buffer overflow attacks is to protect it at a language level and write the code in Perl or JavaScript. Another way is to perform bounds checks to make sure that the data in the buffer is within its limits. Tips for users As the latest Whatsapp attack has shown, it’s very difficult, if not impossible, for users to protect themselves from buffer overflow attacks. Most of the responsibility lies on programmers and developers. Therefore, it’s always a good idea to stay private online and reduce your data footprint. Remember – the more data and personally identifiable information you hold online; the more hackers will get in case of a breach. When comes to the issue of online privacy and security, we suggest to use a fast VPN, and our recommendation is RitaVPN. RitaVPN is an excellent tool for protecting your online privacy and security. And with the using of RitaVPN, you can also access your favorite geo-blocked content. It allows P2P connections on all servers and offers specialized servers for Netflix and other favorite streaming channels. RitaVPN is a relatively new VPN service, but it’s already making a name for itself，which makes it one of the best VPN in 2019. Qwer432 http://www.buyvpns.net/ http://www.buyvpnservices.com/ | ||||
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| Broken | No | ||||
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| Promotion level | None | ||||
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