Phusion Passenger無法以root用戶身份運行-警告：潛在的特權升級漏洞

Question

嗨，我正在嘗試通過乘客和apache2將我的rails應用程序部署到VPS，但是我收到錯誤

   [ W 2018-02-14 21:02:37.0342 9640/T1 age/Cor/CoreMain.cpp:969 ]: WARNING: potential privilege escalation vulnerability. Phusion Passenger is running as root, and part(s) of the passenger root path (/home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/gems/passenger-5.2.0) can be changed by non-root user(s):
    The path "/home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/gems/passenger-5.2.0" can be modified by user "deploy" (or applications running as that user). Change the owner of the path to root, or avoid running Passenger as root.
    The path "/home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/gems/passenger-5.2.0" is writeable by any user (or application). Limit write access on the path to only the root user/group.
    The path "/home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/gems" can be modified by user "deploy" (or applications running as that user). Change the owner of the path to root, or avoid running Passenger as root.
    The path "/home/deploy/.rvm/gems/ruby-2.4.1@spelld.it" can be modified by user "deploy" (or applications running as that user). Change the owner of the path to root, or avoid running Passenger as root.
    The path "/home/deploy/.rvm/gems" can be modified by user "deploy" (or applications running as that user). Change the owner of the path to root, or avoid running Passenger as root.
    The path "/home/deploy/.rvm" can be modified by user "deploy" (or applications running as that user). Change the owner of the path to root, or avoid running Passenger as root.
    The path "/home/deploy" can be modified by user "deploy" (or applications running as that user). Change the owner of the path to root, or avoid running Passenger as root.

我嘗試更改權限，但無法使用

sudo chmod 700 /home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/gems/passenger-5.2.0

和

sudo chown root:root /home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/gems/passenger-5.2.0

我什至發現有相同問題的問題，但我不知道如何解決。。。 如何避免Phusion Passenger以root身份運行？

Answer 1

乘客作者在這里。 您可以做的另一件事是使用root用戶而不是用戶“ deploy”來安裝RVM Ruby和Passenger。 這樣，您的Ruby安裝和Passenger安裝由root擁有，並且您不會看到此警告。

甚至更好：使用我們的本地Debian / Ubuntu / CentOS軟件包。

Answer 2

我也想提供一些見解。 @ Hongli的答案還不是全部。 @ Taryn East是正確的。 即使您對每個目錄都進行了chown，也需要對每個目錄進行chmod才能使Patient正常工作。

在您的示例中，您需要：

chmod 700 /home/deploy/.rvm
chmod 700 /home/deploy/.rvm/gems/
chmod 700 /home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/
chmod 700 /home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/gems/
chmod 700 /home/deploy/.rvm/gems/ruby-2.4.1@spelld.it/gems/passenger-5.2.0