在 apparmor 配置文件下加载 Django 应用程序的设置

Question

所以我们有一个需要 apparmor 配置文件（客户端授权）的 django 应用程序。它运行在位于 /opt/fact-virtual-environment 的 Python 虚拟环境中。应用程序本身安装到 /usr/share/fact

以下是我目前的个人资料（主要使用 aa-genprof 工具构建）：

# Last Modified: Tue Jan 20 09:25:09 2015
#include <tunables/global>

/usr/bin/fact flags=(audit) {
  #include <abstractions/apache2-common>
  #include <abstractions/base>
  #include <abstractions/bash>


  capability setgid,
  capability sys_resource,

  /usr/local/lib/python2.7/dist-packages/**/ rm,
  /usr/local/lib/python2.7/dist-packages/** rm,
  /usr/local/lib/python2.7/site-packages/**/ rm,
  /usr/local/lib/python2.7/site-packages/** rm,
  /etc/apparmor.d/** r,
  #/usr/lib/python2.7/**[^/] r,

  /usr/bin/sudo Ux,

  #/usr/bin/strace ux,
  /bin/bash rix,
  /bin/dash rix,
  /bin/uname rix,
  /dev/tty rw,
  /etc/default/locale r,
  #/etc/nsswitch.conf r,
  #/etc/group r,
  #/etc/passwd r,
  /etc/environment r,
  /etc/login.defs r,
  /etc/lsb-release r,
  /etc/fact/fact.ini r,
  /etc/python2.7/sitecustomize.py r,
  /etc/security/pam_env.conf r,
  /lib{,32,64}/** mr,
  /opt/fact-virtual-environment/**/ mr,
  /opt/fact-virtual-environment/lib/python2.7/**/ mr,
  /opt/fact-virtual-environment/lib/python2.7/** mr,
  /opt/fact-virtual-environment/bin/python rix,
  /run/utmp rk,
  /sbin/ldconfig rix,
  /sbin/ldconfig.real rix,
  /usr/bin/fact rix,
  /usr/lib{,32,64}/** mr,
  /usr/share/fact/**/ r,
  /usr/share/fact/** r,
  /usr/share/pyshared/** r,
  /usr/share/pyshared/**/ r,
}

.../usr/bin/fact 命令是一个简单的包装器：

#!/bin/bash

## This script is for running the 'fact' command on staging/prod, it sudos to
## the 'fact' user before executing /opt/fact/bin/fact

## It is installed as '/usr/bin/fact'

PYTHONPATH=/usr/share/fact
PYTHON_BIN=/opt/fact-virtual-environment/bin/python
DJANGO_SETTINGS_MODULE=fact.settings.staging

if [ "$USER" != "fact" ];
then
  sudo -u fact [=11=] $*;
else
  PYTHONPATH=${PYTHONPATH} DJANGO_SETTINGS_MODULE=${DJANGO_SETTINGS_MODULE}  ${PYTHON_BIN} -m fact.managecommand $*;
fi

我已经启用了很多我知道我不需要的读取权限，比如调试尝试中的整个 /usr/local/lib/* 集。整件事让我印象深刻的是，当我运行 service apparmor reload（或重新启动）时，我的配置文件似乎没有重新加载。如果我重新启动服务与 aa-complain usr.bin.fact 后跟 aa-enforce usr.bin.fact.

，我似乎会得到不同的结果

现在当我运行我的命令并检查系统日志时，我看到以下内容：

Feb 11 15:08:48 spiffy kernel: [1228245.774660] type=1400 audit(1423620528.359:14142): apparmor="DENIED" operation="open" parent=12884 profile="/usr/bin/fact" name="/usr/local/lib/python2.7/site-packages/" pid=12885 comm="python" requested_mask="r" denied_mask="r" fsuid=111 ouid=0
Feb 11 15:08:48 spiffy kernel: [1228245.774855] type=1400 audit(1423620528.359:14143): apparmor="DENIED" operation="open" parent=12884 profile="/usr/bin/fact" name="/usr/local/lib/python2.7/dist-packages/" pid=12885 comm="python" requested_mask="r" denied_mask="r" fsuid=111 ouid=0
Feb 11 15:08:48 spiffy kernel: [1228245.775829] type=1400 audit(1423620528.359:14144): apparmor="DENIED" operation="open" parent=12884 profile="/usr/bin/fact" name="/usr/local/lib/python2.7/dist-packages/" pid=12885 comm="python" requested_mask="r" denied_mask="r" fsuid=111 ouid=0

..和我的 python 申请 barfs:

$ fact
Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/share/fact/fact/managecommand.py", line 6, in <module>
    execute_from_command_line(sys.argv)
  File "/opt/fact-virtual-environment/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/opt/fact-virtual-environment/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 345, in execute
    settings.INSTALLED_APPS
  File "/opt/fact-virtual-environment/local/lib/python2.7/site-packages/django/conf/__init__.py", line 46, in __getattr__
    self._setup(name)
  File "/opt/fact-virtual-environment/local/lib/python2.7/site-packages/django/conf/__init__.py", line 42, in _setup
    self._wrapped = Settings(settings_module)
  File "/opt/fact-virtual-environment/local/lib/python2.7/site-packages/django/conf/__init__.py", line 98, in __init__
    % (self.SETTINGS_MODULE, e)
ImportError: Could not import settings 'fact.settings.staging' (Is it on sys.path? Is there an import error in the settings file?): cannot import name current_app

它要查找的设置文件位于 /usr/share/fact/fact/settings/staging.py

我完全不明白为什么我无法根据其 apparmor 配置文件将此应用程序添加到运行。配置文件中的设置应该允许它。怎么回事？

Answer 1

所有拒绝都在寻找这个特定目录：/usr/local/lib/python2.7/dist-packages/

您的个人资料包含此目录的一些子项：

/usr/local/lib/python2.7/dist-packages/**/ rm,
/usr/local/lib/python2.7/dist-packages/** rm,
/usr/local/lib/python2.7/site-packages/**/ rm,
/usr/local/lib/python2.7/site-packages/** rm,

但它不包括这个特定的目录。所以将此添加到您的个人资料，重新加载个人资料，然后重试：

/usr/local/lib/python2.7/dist-packages/ r,

AppArmor 使用尾随 / 来确定管理员是打算允许获取目录列表还是允许读取文件。

谢谢

Answer 2

您的个人资料缺少读取目录的权限 /usr/local/lib/python2.7/站点包/

您需要添加 /usr/local/lib/python2.7/site-packages/r,

您当前配置文件的权限允许访问 /usr/local/lib/python2.7/site-packages/ 下的所有内容，但不能实际访问目录本身

在 apparmor 配置文件下加载 Django 应用程序的设置

Loading Django application's setting under an apparmor profile

python

linux

django

security

apparmor