Tag Archive for: exploring

Exploring The Anatomy Of A Linux Kernel Exploit

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A lot of talk and discussion happens anytime a hardware manufacturer releases a new line of faster, more powerful, or more efficient computers. It’s easy to see better and better specifications and assume that’s where all the progress is made. But without improved software and algorithms, often the full potential of the hardware can’t be realized. That’s the reason for the creation of io_uring, an improved system call interface in the Linux kernel. It’s also where [chompie] went to look for exploits.

The reason for looking here, in a part of the kernel [chompie] had only recently learned about, was twofold. First, because it’s a place where user space applications interact with the kernel, and second because it’s relatively new and that means more opportunities to find bugs. The exploit involves taking advantage of a complicated asynchronous buffer system, specifically at a location where the code confuses a memory location being used by the kernel with one which is supposed to be used for user space.

To actually get this to work as an exploit, though, a much more involved process is needed to make sure the manipulation of these memory addresses results in something actually useful, but it is eventually used to gain local privilege escalation. More about it can be found in this bug report as well. Thanks to the fact that Linux is open-source, this bug can quickly be fixed and the patch rolled out to prevent malicious attackers from exploiting it. Open-source software has plenty of other benefits besides being inherently more secure, though.


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Exploring the Evolving Landscape and Technological Advancements in Military Aircraft

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PRESS RELEASE

Published May 31, 2023

 

Military aircraft are critical assets for every country’s defence and security. These specialized aircraft are developed and outfitted for a variety of military roles, such as combat missions, surveillance, reconnaissance, transport, and aerial refueling. Military aircraft are outfitted with cutting-edge technology and weapons systems to secure air supremacy and support ground troops. They are critical in carrying out strategic operations, air defence, and maintaining territorial integrity. Air forces and naval aviation units operate military aircraft, which are subjected to rigorous training and upkeep to maintain their readiness and effectiveness. Military aircraft development and deployment constitute a considerable investment in defence capabilities, allowing governments to project power and safeguard their interests both locally and globally.

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All interested in global Military aircraft industry experts can use this report to examine market trends, gauge the competitive landscape, spot business opportunities, and zero in on the major market drivers. The analysis covers company profiles of the top market players, information on their recent product launches, product extensions, marketing strategies, business strategy, business infrastructure, upcoming rival products and services, price trends, and business infrastructure. Research methodologies like primary research, secondary research, bottom-up and top-down approaches, SWOT analysis, Porter Five Forces analysis, and others are used to study the Military aircraft market.

Growth Drivers of Military aircraft:

Several causes are driving the expansion of military aircraft. For starters, technological and engineering developments have resulted in the production of more complex and capable aircraft, which in turn generates demand for modernization and acquisition. Furthermore, geopolitical tensions and regional crises necessitate states beefing up their defence capabilities, including the procurement of modern military aircraft. Furthermore, the growing necessity of aerial observation,…

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Rise in Ransomware: Exploring the Driving factors

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Ransomware attacks continue to dominate headlines with groups like ‘Lapsus$’ and ‘Conti’ popping up frequently in a constant barrage of alarming stories. There is always a new attack or development in ransomware that keeps cybersecurity professionals on their toes. Ransomware attacks have taken over as the most effective means for cyber assailants to use and exploit access to highly sensitive information for illegal gains.

Reasons Behind the Rise in Ransomware Attacks:

Compromised Credentials 

The most common way to steal data is by compromising passwords. According to Verizon, 81% of all cybercrime has stolen or guessed credentials as a starting point, a huge vulnerability for all organizations.

With just a username and password, you will never truly know the real identity of who is using them. Hackers will target both weak and already compromised passwords when acquiring entry into a system, device or network.

How to Respond: One of the best ways to keep your information safe is by using multi-factor authentication methods and stronger antivirus protection while also making sure that you’re practising smarter password habits elsewhere.

Application Vulnerabilities 

Remember the REvil ransomware digital supply chain hack in July 2021? In this incident the ransomware gang exploited vulnerabilities in a public-facing internet application and used it to spread malware to thousands of supply chain partner organizations. Equally dangerous was the PrintNightmare vulnerability that affects the Microsoft Windows Print Spooler Service. This has the potential to allow an attacker to control a compromised computer.

Application zero-day vulnerabilities likes these present a top attack vector that is being exploited by ransomware groups.

How to Respond: Patch management should be a high priority for every online business.

Risk-based vulnerability management is the key to identifying vulnerabilities that are most likely to be exploited and taking immediate action. If you are experiencing issues with vulnerability management, switch to fully managed security service (MSP) providers like Indusface. The MSP continues to operate 24/7 and manages the digital…

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Exploring Biometrics and Trust at the Corporate Level

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As the world continues to move essential functions to digital environments, companies need trustworthy methods for verifying who is behind the screen. Multifactor authentication (MFA) has become the standard for preventing cyberattacks, with the US National Cyber Security chief saying it could prevent 80% to 90% of attacks. MFA works by requiring multiple layers of authentication, such as one-time passwords (OTPs), physical hardware tokens, or soft tokens.

While these do a better job of securing access and data than traditional passwords, what are they really verifying? In the case of SMS-delivered OTPs, the system is verifying your access to a phone; with hardware tokens, it’s access to a physical card or device. But none of these require the actual person to confirm they are who they say they are. These methods rely on the assumption that the only person accessing these devices is their owner. Clearly, it’s a device, rather than a person, that is being verified. So what can organizations do to improve on traditional MFA methods and build trust with the people behind each digital interaction?

Some methods for MFA verification, including hardware tokens and SMS-based OTPs, have been widely adopted, but they present clear challenges for organizations. Phone-based options require access to a smartphone — not something everyone has and not something companies want out in all environments. Token-based systems are not much better; tokens can be lost, forgotten, or easily handed to another user. The clear solution is to have a biometric measurement that is entirely unique to the user as part of any MFA strategy. But not all biometric methods are created equal, and some still only establish trust at the device level.

Limitations of Device-Based Biometrics
Device-based biometrics, such as a fingerprint captured using the built-in sensor on a phone, PC, or dongle, are stored within the device that they are captured on. These systems offer a high level of convenience for the user, as well as strong security for personal use cases. However, device-based biometrics fall into the same trap as other MFA methods — it is still the device, and oftentimes an encrypted key, being verified, rather…

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