PowerShell to be Available at Linux Now

The tool is based on the .NET platform and works not only on the desktop, but also in the cloud, as well as on the "IoT" devices
23 July 2018   1003

The open source command-line shell from Microsoft called PowerShell Core received a snap-version for Linux OS. The tool is based on the .NET platform and works not only on the desktop, but also in the cloud, as well as on the "Internet of things" devices.

PowerShell is designed specifically for administrators of hybrid cloud systems and users who want to automate the management of the operating system and its programs.

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PowerShell Key Features

Self-sufficient packages in the snap format work natively on popular Linux distributions, are updated automatically and provide a high level of security for users. According to the authors of the project, the snap-version is installed easier than classic applications, receives direct updates from Microsoft and provides flexibility when working with multiple operating systems.

Microsoft also published a preview version of the program for everyone who wants to try out the new features first. It is distributed as a separate package, so it can be used along with a stable release.

You can download both versions with the snap install powershell -classic and snap install powershell-preview -classic commands.

Ledger to Discover HSM Vulnerability

HSM is an external device designed to store public and private keys used to generate digital signatures and to encrypt data, used by banks, exchanges, etc
10 June 2019   1519

A group of researchers from Ledger identified several vulnerabilities in the Hardware Security Module (HSM) devices, which can be used to extract keys or perform a remote attack to replace the firmware of an HSM device. The problem report is currently available only in French, the English-language report is scheduled to be published in August during the Blackhat USA 2019 conference. HSM is a specialized external device designed to store public and private keys used to generate digital signatures and to encrypt data.

HSM allows you to significantly increase protection, as it completely isolates keys from the system and applications, only by providing an API to perform basic cryptographic primitives implemented on the device side. Typically, HSM is used in areas where you need to provide the highest protection, for example, in banks, cryptocurrency exchanges, certification centers for checking and generating certificates and digital signatures.

The proposed attack methods allow an unauthenticated user to gain complete control over the contents of the HSM, including extracting all the cryptographic keys and administrative credentials stored on the device. The problems are caused by a buffer overflow in the internal PKCS # 11 command handler and an error in the implementation of the cryptographic protection of the firmware, which bypasses the firmware check using the PKCS # 1v1.5 digital signature and initiates loading the own firmware in the HSM.

The name of the manufacturer, the HSM devices of which have vulnerabilities, has not yet been disclosed, but it is argued that the problem devices are used by some large banks and cloud service providers. At the same time it is reported that information about the problems was previously sent to the manufacturer and it has already eliminated vulnerabilities in the fresh firmware update. Independent researchers suggest that the problem may be in the devices of the company Gemalto, which in May released an update to Sentinel LDK with the elimination of vulnerabilities, access to information about which is still closed.