No semantic av rules displayed by "sesearch -A -s httpd_sys_script_t -p name_bind -C | grep -v ^D"

[Shintaro Fujiwara]

Thanks, Dan.

I will re-think on boolean permission on my server.

And thank you on your blog post.

2014-11-05 6:04 GMT+09:00 Daniel J Walsh <dwalsh at redhat.com>:

>
> On 10/31/2014 10:57 PM, Shintaro Fujiwara wrote:
>
>   On my fedora20 box, I tried to check Bash Expoit as Dan did on his
> latest blog post.
>
>  What I got is,
>
> [root at xxxx ~]# sesearch -A -s httpd_sys_script_t -p name_bind -C | grep
> -v ^D
> Found 12 semantic av rules:
>
>  Though 12 rules caught by sesearch, but none displayed.
>
>   Next I typed,
>
>
>  [root at xxxx ~]# sesearch -A -s httpd_sys_script_t -p name_connect -C |
> grep -v ^D
> Found 24 semantic av rules:
>    allow nsswitch_domain dns_port_t : tcp_socket { recv_msg send_msg
> name_connect } ;
>    allow nsswitch_domain dnssec_port_t : tcp_socket name_connect ;
> ET allow httpd_sys_script_t gds_db_port_t : tcp_socket name_connect ; [
> httpd_can_network_connect_db ]
> ET allow httpd_sys_script_t mysqld_port_t : tcp_socket { recv_msg send_msg
> name_connect } ; [ httpd_can_network_connect_db ]
> ET allow nsswitch_domain ocsp_port_t : tcp_socket name_connect ; [
> kerberos_enabled ]
> ET allow httpd_sys_script_t postgresql_port_t : tcp_socket { recv_msg
> send_msg name_connect } ; [ httpd_can_network_connect_db ]
> ET allow httpd_sys_script_t oracle_port_t : tcp_socket name_connect ; [
> httpd_can_network_connect_db ]
> ET allow httpd_sys_script_t mssql_port_t : tcp_socket name_connect ; [
> httpd_can_network_connect_db ]
> ET allow nsswitch_domain kerberos_port_t : tcp_socket { recv_msg send_msg
> name_connect } ; [ kerberos_enabled ]
> ET allow httpd_sys_script_t port_type : tcp_socket { recv_msg send_msg
> name_connect } ; [ httpd_enable_cgi httpd_can_network_connect && ]
>
> This is ok.
>
>  What's wrong with name_bind thing?
>
>  I use
> setools-console                    x86_64                    3.3.7-41.fc20
>
> --
>  日本にヘヴィメタル・ハードロックを根付かせるページ
>  http://heavymetalhardrock.no-ip.info/
>
> 世界中でセキュアＯＳのSELinuxを使いやすくするフリーソフト
> http://sourceforge.net/projects/segatex/
>
> CMS（PHPとPostgreSQLを使ったフリーソフト）
>  http://sourceforge.net/projects/webon/
> https://github.com/intrajp/irforum_jp
>
>
> --
> selinux mailing listselinux at lists.fedoraproject.orghttps://admin.fedoraproject.org/mailman/listinfo/selinux
>
>  name_bind allows you to listen on a port, which could be used to
> establish a back door for incoming connections.  Since you turned on some
> booleans, you are allowed to connect to more network ports.
>
>


-- 
日本にヘヴィメタル・ハードロックを根付かせるページ
http://heavymetalhardrock.no-ip.info/

世界中でセキュアＯＳのSELinuxを使いやすくするフリーソフト
http://sourceforge.net/projects/segatex/

CMS（PHPとPostgreSQLを使ったフリーソフト）
http://sourceforge.net/projects/webon/
https://github.com/intrajp/irforum_jp
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