Posts41-50
About Apache Log4j RCE vulnerability (CVE-2021-44228)
Summary
- Caused by Apache Log4j’s JNDI (“Java Naming and Directory Interface”) features.
- How is it severe? The CVSS score is 10, the maximum, which means the highest risk.
Description
CVE-2021-44228 (named “log4shell” or “log4jam”): Remote code execution (RCE) severe vulnerability, discovered in Log4j, affects a wide range.
... ReadApache Log4j RCE vulnerability (CVE-2021-44228): Attack trials detected
Today, our company detected attack trials on Apache Log4j RCE vulnerability (CVE-2021-44228) due to its JNDI (“Java Naming and Directory Interface”) features to one of our servers in Swiss:
... ReadFix Flutter doctor failed due to java.lang.NoClassDefFoundError
Trouble
I updated Flutter version to 2.2.0 on my Arch Linux today. Then I met the error “Android license status unknown.” in running
... Readflutter doctorfor the first time. It seemed strange because I had already run it with an option:flutter doctor --android-licenses. Anyway, there was no way except running it again. And the result was:Fix Flutter doctor failed due to permission denied on Linux
Problem
When I tried to install Flutter 2 on Linux, running
flutter doctorwas required.Running it, however, resulted in the “Permission denied” error below.
... ReadFix missing Flutter menus in Android Studio
Problem
When I struggled to build Flutter 2 development environment with Android Studio in Arch Linux, I sometimes met the situation where Flutter menus were missing. I installed Flutter and Dart via pacman and also “Configure"d “Plugins” of them on Android Studio. The start menus didn’t show, however, Flutter menus.
... ReadFlutter 2 on Arch Linux: Getting started
Fix rustup failed with "error: linker `cc` not found" on Alpine Linux 3.13 (Rust 1.50)
Summary
Today, I made a Dockerfile for Rust development on Alpine Linux. I met the error below when installing Rust with Rustup:
... ReadDocker 19.03 without sudo
sqlcmd failed due to "locale::facet::_S_create_c_locale name not valid"
Intro
If the locale of your OS is NOT English, you might meet the error below, when the installation of
... Readsqlcmd, a Microsoft SQL Server 2017’s client command line tool, has finished and you try to use it.Microsoft SQL Server Client 2017 on Debian 9
As is a way to install the server of Microsoft SQL Server 2017, we can install the client called
... Readsqlcmd, a command line tool, as a part of mssql-tools on Debian.