Re: SELinux avc: denied after upgrading phpBB

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> Daniel J Walsh wrote:
>> Paul Howarth wrote:
>>> On Sat, 2006-07-29 at 19:42 -0300, Clodoaldo Pinto wrote:
>>>
>>>> 2006/7/29, Paul Howarth <paul@xxxxxxxxxxxx>:
>>>>
>>>>> On Sat, 2006-07-29 at 14:56 -0300, Clodoaldo Pinto wrote:
>>>>>
>>>>>> FC5. After upgrading phpBB from 2.0.19 to 2.0.21 I get this message:
>>>>>>
>>>>>> kernel: audit(1154193819.965:244): avc:  denied  { getattr } for
>>>>>> pid=10862 comm="httpd" name="index.php" dev=sda1 ino=2553454
>>>>>> scontext=user_u:system_r:httpd_t:s0
>>>>>> tcontext=user_u:object_r:tmp_t:s0
>>>>>> tclass=file
>>>>>>
>>>>>> Why didn't I have it with the old version?
>>>>>>
>>>>> The old version was probably installed properly...
>>>>>
>>>>>
>>>>>> I know there are booleans related to httpd:
>>>>>>
>>>>>> # getsebool -a | grep httpd
>>>>>> allow_httpd_anon_write --> off
>>>>>> allow_httpd_mod_auth_pam --> off
>>>>>> allow_httpd_sys_script_anon_write --> off
>>>>>> httpd_builtin_scripting --> on
>>>>>> httpd_can_network_connect --> off
>>>>>> httpd_can_network_connect_db --> on
>>>>>> httpd_can_network_relay --> off
>>>>>> httpd_disable_trans --> off
>>>>>> httpd_enable_cgi --> on
>>>>>> httpd_enable_ftp_server --> off
>>>>>> httpd_enable_homedirs --> on
>>>>>> httpd_rotatelogs_disable_trans --> off
>>>>>> httpd_ssi_exec --> on
>>>>>> httpd_suexec_disable_trans --> off
>>>>>> httpd_tty_comm --> off
>>>>>> httpd_unified --> on
>>>>>>
>>>>>> Which one, if any, can solve this problem?
>>>>>>
>>>>> None of them. The problem is that the file has the wrong context
>>>>> type,
>>>>> probably due to having bee unpacked in /tmp and copied into your web
>>>>> server area. You need to change the context type of the php files and
>>>>> the directory they are in to httpd_sys_content_t.
>>>>>
>>>> The patch was unpacked in my home directory and copied to
>>>> /var/www/html/domain which is owned by me.
>>>>
>>>> The upgrade process is:
>>>> $ patch -cl -p1 < phpBB-2.0.19_to_2.0.21.patch
>>>>
>>>> This changes already existing files. And it also changes their
>>>> contexts to tmp_t as patch uses the /tmp directory for temporary
>>>> files:
>>>>
>>>> $ ls -aZ
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t .
>>>> drwxr-xr-x  root root system_u:object_r:httpd_sys_content_t ..
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t admin
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t cache
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            common.php
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:httpd_sys_content_t config.php
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t db
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t docs
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:httpd_sys_content_t
>>>> extension.inc
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:httpd_sys_content_t faq.php
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:httpd_sys_content_t groupcp.php
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t images
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t includes
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            index.php
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t language
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            login.php
>>>> -rw-rw-r--  cpn  cpn  user_u:object_r:tmp_t            memberlist.php
>>>> -rw-rw-r--  cpn  cpn  user_u:object_r:httpd_sys_content_t
>>>> memberlist.php.orig
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            modcp.php
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:httpd_sys_content_t
>>>> phpBB-2.0.19_to_2.0.21.patch
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            posting.php
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            privmsg.php
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            profile.php
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            search.php
>>>> drwxr-xr-x  cpn  cpn  user_u:object_r:httpd_sys_content_t templates
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:httpd_sys_content_t
>>>> viewforum.php
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:httpd_sys_content_t
>>>> viewonline.php
>>>> -rw-r--r--  cpn  cpn  user_u:object_r:tmp_t            viewtopic.php
>>>>
>>>> I changed the contexts back with chcon:
>>>>
>>>> $ chcon -R -t httpd_sys_content_t *
>>>>
>>>> Is it necessary to use chcon whenever a patch is applied or is there a
>>>> way to change patch's behavior or some selinux configuration?
>>>>
>>>
>>> It'll be safest to check contexts after using patch and fix them if
>>> necessary. In this particular case you might avoid the problem by
>>> persuading patch to use a temporary directory that has the
>>> httpd_sys_content_t type, but that approach won't work in all cases.
>>>
>>> Paul.
>>>
>>>
>>>
>>
>> Can you open a bugzilla on patch.  It should maintain the XATTRs on the
>> file it is patching.
>
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=165799
>
> CLOSED WONTFIX
>
> Paul.
>
> --


Looks like it was then reopened....

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