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

[Daniel J Walsh]

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
>
> -- 
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>
> 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/
>
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>
>
> --
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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.

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