CVE_2015_0235 glibc 中 gethostbyname*() 缓冲区溢出利用 - CVE-2015-0235 https://community.qualys.com/blogs/laws-of-vulnerabilities/2015/01/27/the-ghost-vulnerability

最初来源于 Ben Bomgardner 在 help-cfengine 邮件列表中的帖子。 https://groups.google.com/forum/#!topic/help-cfengine/tWjOlO19Mrw

集成到主配置文件中

** 下载策略文件并解压到你的主配置文件目录中

#+begin_src sh MASTERFILES=/home/nickanderson/CFEngine/masterfiles wget https://github.com/nickanderson/CVE_2015_0235/archive/master.tar.gz -O /tmp/CVE_2015_0235.tar.gz tar --directory "$MASTERFILES/services" -zxvf /tmp/CVE_2015_0235.tar.gz #+end_src

** 测试利用代码需要编译

#+begin_src sh cd $MASTERFILES/services/CVE_2015_2035/bins gcc GHOST.c -o GHOST_CVE-2015-0235 #+end_src

** 将 def.cf 的路径包含到 inputs 中

#+begin_src cfengine body common control { inputs => { # Reports @(cfengine_reports.inputs),

                # 如果你希望通过 autorun 激活此策略，
                # 则需在 autorun inputs 之前包含它。
                "services/CVE_2015_0235/def.cf",
                
                # autorun system
                @(services_autorun.inputs),
    };

} #+end_src

在你的策略中激活它（使用 autorun）

创建 /masterfiles/services/autorun/CVE_2015_0235.cf 文件，内容如下：

#+begin_src cfengine bundle agent CVE_2015_0235 { meta: # Make sure we get activated "tags" slist => { "autorun" };

classes:
  any::
    # Enable the features we want
    "enable_CVE_2015_0235_inventory" expression => "any";

methods:
      # Make sure that the control bundle has converged
    "CVE_2015_0235"
      usebundle => CVE_2015_0235_def_file_control,
      comment => "Activate each enabled policy";
    
  # Activate the features we want if they are enabled
  enable_CVE_2015_0235_inventory::
    "CVE_2015_0235"
      usebundle => CVE_2015_0235_inventory,
      comment => "We want to know where we are vulnerable";

reports:
  DEBUG|DEBUG_CVE_2015_0235::
    "Activated: '$(this.bundle)' in '$(this.promise_filename)'";

} #+end_src

cfengine-CVE_2015_0235

最受欢迎