- Kali Linux 2020.1a系统安装后，启动msfconsole将出现如下错误：
root@kali:~# msfconsole
[*] Bundler failed to load and returned this error:
'cannot load such file -- bundler / setup'
[*] You may need to uninstall or upgrade bundler
- 由于默认安装的bundler为最新版本2.1.4。msfconsole依赖的版本为1.17.3，所以需要安装旧版本。执行如下命令：
gem install bundler:1.17.3
- 如果超时报错
执行gem install bundler后报错：
ERROR: Could not find a valid gem ‘bundler’ (>= 0), here is why:
Unable to download data from https://ruby.taobao.org/ - SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed (https://ruby.taobao.org/specs.4.8.gz)
- 检查现在用的源
gem sources -l
- 添加新的源，删除原来的旧源
gem sources --add https://gems.ruby-china.com/ --remove https://rubygems.org/
- 确保只有一个源
gem sources -l
