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A vulnerability in the Linux kernel that allows privilege escalation via BPF

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Information has been published about a vulnerability (CVE-2020-8835) in the Linux kernel, which was used in the Pwn2Own 2020 competition during the demonstration of a breach in Ubuntu. The vulnerability allowed a non-privileged user to gain root access. A working exploit exists but has not yet been published. The vulnerability is present in the eBPF subsystem, which allows handlers for tracing, performance analysis of subsystems, and traffic management to be executed within the kernel in a special virtual […

A distribution for creating network storage OpenMediaVault 5 is available

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Following nearly two years since the formation of the last significant branch, the release of OpenMediaVault 5 has taken place, aimed at the rapid deployment of Network-Attached Storage (NAS). The OpenMediaVault project was founded in 2009 after a split among developers of the FreeNAS distribution, resulting in a fork that, alongside the classic FreeNAS based on FreeBSD, aimed to […

Vulnerabilities in the auto-update mechanism of Apache NetBeans

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Information has been disclosed about two vulnerabilities in the automatic update delivery system for the integrated development environment Apache NetBeans, allowing for the substitution of updates and nbm packages delivered by the server. These issues were addressed discreetly in the release of Apache NetBeans 11.3. The first vulnerability (CVE-2019-17560) is due to the lack of SSL certificate and hostname verification when downloading data via HTTPS, enabling the unnoticed substitution of downloads […]

RAR Archiver 5.90

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The release of the proprietary RAR archiver version 5.90 has been announced. Changes in the console version include: Increased RAR compression speed when using processors with 16 or more cores. When creating RAR5 archives, the 'Fastest' compression method usually provides denser packing for well-compressible data. (The command line equivalent is the -m1 switch) The maximum number of threads used has been increased from 32 to 64. […]

Review of the GS1350-12HP PoE Switch + Giveaway

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Overview of the 12-port smart managed gigabit PoE switch Zyxel GS1350-12HP with gigabit uplink and a price of 21,799 rubles. Anyone who looks under the cut risks getting it absolutely free. About Zyxel A publicly traded company headquartered in Taiwan, specializing in the production of networking equipment for home and business since 1989. Its shares are traded on the Taiwan Stock Exchange. It has a representative office in […]

How Email Works

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This is the beginning of an extensive course on mail server operations. I am not aiming to teach anyone how to work with mail servers quickly. There will be a lot of additional information related to the topics we will encounter along the way, as I strive to create the course mainly for those who are just taking their first steps. Preface It so happens that I work part-time as an instructor for […]

Release of the Linux distribution openEuler 20.03, developed by Huawei

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Huawei has released the Linux distribution openEuler 20.03, which is the first release to be supported under a long-term support cycle (LTS). Package updates for openEuler 20.03 will be issued until March 31, 2024. Repositories and installation ISO images (x86_64 and aarch64) are available for free download along with the source texts of the packages. The source texts specific to the distribution's components are hosted in […]

Wine 5.5

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On March 27, the release of Wine 5.5 took place. Wine is an application compatibility layer for Windows that translates Windows API calls into POSIX calls in real-time, rather than emulating Windows logic like a virtual machine. In addition to over 32 fixes in the bug tracker, the new release features: Built-in libraries now use the UCRTBase C runtime, improved support for debug information in PE files. Added […]

Linux Kernel 5.6

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Key changes: Intel MPX (memory protection extension) support has been removed from the kernel. RISC-V has gained KASAN support. The kernel's translation from the 32-bit time_t type and associated types is complete: the kernel is now ready for the year 2038 problem. Operations for the io_uring subsystem have been added. The system call pidfd_getfd() has been added, allowing a process to retrieve a file descriptor from another process. A bootconfig mechanism has been introduced, enabling the kernel […]

Linux Console Utilities That Can Make Your Life Easier (Part 2)

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Since the previous article was well received, it would be wrong not to share additional utilities that I still use today. I want to clarify that this article is adapted for beginners, and seasoned Linux users may need to be patient with some of the explanations. Let's dive into the topic! A Preface for Beginners It’s worth starting with which distribution you are using. […]

Linux console utilities that can make your life easier

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A little about console utilities that few people know about, but which can be useful for both a novice junior and a seasoned senior. Why it is worth writing about this Writing about utilities (primarily console ones) is important because I see so many people not utilizing the power of the console to its full extent. Many limit themselves to simply creating files, while […]

WireGuard VPN 1.0.0 is available.

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The landmark release of VPN WireGuard 1.0.0 has been announced, marking the inclusion of WireGuard components in the mainline of the Linux kernel 5.6 and the stabilization of its development. The code included in the Linux kernel has undergone an additional security audit conducted by an independent firm specializing in such checks. The audit found no issues. Since WireGuard is now being developed in the mainline of the Linux kernel, distributions […]

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