On 04/05/2010 09:32 AM, Vadym Chepkov wrote:
> --- On Mon, 4/5/10, Daniel J Walsh<dwalsh@xxxxxxxxxx> wrote:
>
>
>> From: Daniel J Walsh<dwalsh@xxxxxxxxxx>
>> Subject: Re: httpd mod_auth_pam winbind
>> To: "Vadym Chepkov"<chepkov@xxxxxxxxx>
>> Cc: selinux@xxxxxxxxxxxxxxxxxxxxxxx
>> Date: Monday, April 5, 2010, 8:11 AM
>> On 04/02/2010 12:58 PM, Vadym Chepkov
>> wrote:
>>
>>> --- On Fri, 4/2/10, Daniel J Walsh<dwalsh@xxxxxxxxxx>
>>>
>> wrote:
>>
>>>
>>>
>>>> From: Daniel J Walsh<dwalsh@xxxxxxxxxx>
>>>> Subject: Re: httpd mod_auth_pam winbind
>>>> To: "Vadym Chepkov"<chepkov@xxxxxxxxx>
>>>> Cc: selinux@xxxxxxxxxxxxxxxxxxxxxxx
>>>> Date: Friday, April 2, 2010, 11:33 AM
>>>> On 04/02/2010 12:38 AM, Vadym Chepkov
>>>> wrote:
>>>>
>>>>
>>>>> Hi,
>>>>>
>>>>> I have
>>>>>
>> selinux-policy-targeted-2.4.6-255.el5_4.4
>>
>>>>> allow_httpd_mod_auth_pam
>>>>>
>> --> on
>>
>>>>> httpd_can_network_connect
>>>>>
>> --> on
>>
>>>>> httpd with mod_auth_pam via winbind
>>>>>
>>>>> get the following avc when in "permissive"
>>>>>
>> mode
>>
>>>>>
>>>>> type=SYSCALL msg=audit(1270181973.950:37):
>>>>>
>>>>>
>>>> arch=c000003e syscall=41 success=yes exit=19 a0=10
>>>>
>> a1=3 a2=9
>>
>>>> a3=0 items=0 ppid=2032 pid=2039 auid=4294967295
>>>>
>> uid=48
>>
>>>> gid=48 euid=48 suid=48 fsuid=48 egid=48 sgid=48
>>>>
>> fsgid=48
>>
>>>> tty=(none) ses=4294967295 comm="httpd"
>>>>
>> exe="/usr/sbin/httpd"
>>
>>>> subj=user_u:system_r:httpd_t:s0 key=(null)
>>>>
>>>>
>>>>> type=AVC msg=audit(1270181973.950:37): avc:
>>>>>
>>>>>
>>>> denied { create } for pid=2039
>>>>
>> comm="httpd"
>>
>>>> scontext=user_u:system_r:httpd_t:s0
>>>> tcontext=user_u:system_r:httpd_t:s0
>>>> tclass=netlink_audit_socket
>>>>
>>>>
>>>>> type=SYSCALL msg=audit(1270181973.950:38):
>>>>>
>>>>>
>>>> arch=c000003e syscall=44 success=yes exit=124
>>>>
>> a0=13
>>
>>>> a1=7fff640fa9c0 a2=7c a3=0 items=0 ppid=2032
>>>>
>> pid=2039
>>
>>>> auid=4294967295 uid=48 gid=48 euid=48 suid=48
>>>>
>> fsuid=48
>>
>>>> egid=48 sgid=48 fsgid=48 tty=(none)
>>>>
>> ses=4294967295
>>
>>>> comm="httpd" exe="/usr/sbin/httpd"
>>>> subj=user_u:system_r:httpd_t:s0 key=(null)
>>>>
>>>>
>>>>> type=AVC msg=audit(1270181973.950:38): avc:
>>>>>
>>>>>
>>>> denied { nlmsg_relay } for pid=2039
>>>>
>> comm="httpd"
>>
>>>> scontext=user_u:system_r:httpd_t:s0
>>>> tcontext=user_u:system_r:httpd_t:s0
>>>> tclass=netlink_audit_socket
>>>>
>>>>
>>>>> type=AVC msg=audit(1270181973.950:38): avc:
>>>>>
>>>>>
>>>> denied { write } for pid=2039
>>>>
>> comm="httpd"
>>
>>>> scontext=user_u:system_r:httpd_t:s0
>>>> tcontext=user_u:system_r:httpd_t:s0
>>>> tclass=netlink_audit_socket
>>>>
>>>>
>>>>> type=SYSCALL msg=audit(1270181973.950:39):
>>>>>
>>>>>
>>>> arch=c000003e syscall=45 success=yes exit=36
>>>>
>> a0=13
>>
>>>> a1=7fff640f8690 a2=231c a3=42 items=0 ppid=2032
>>>>
>> pid=2039
>>
>>>> auid=4294967295 uid=48 gid=48 euid=48 suid=48
>>>>
>> fsuid=48
>>
>>>> egid=48 sgid=48 fsgid=48 tty=(none)
>>>>
>> ses=4294967295
>>
>>>> comm="httpd" exe="/usr/sbin/httpd"
>>>> subj=user_u:system_r:httpd_t:s0 key=(null)
>>>>
>>>>
>>>>> type=AVC msg=audit(1270181973.950:39): avc:
>>>>>
>>>>>
>>>> denied { read } for pid=2039
>>>>
>> comm="httpd"
>>
>>>> scontext=user_u:system_r:httpd_t:s0
>>>> tcontext=user_u:system_r:httpd_t:s0
>>>> tclass=netlink_audit_socket
>>>>
>>>>
>>>>> audit2allow suggests simple:
>>>>> allow httpd_t self:netlink_audit_socket {
>>>>>
>> nlmsg_relay
>>
>>>>>
>>>>>
>>>> write create read };
>>>>
>>>>
>>>>> Is something missing in the policy or I missed
>>>>>
>> some
>>
>>>>>
>>>>>
>>>> other boolean?
>>>>
>>>>
>>>>>
>>>>>
>>>> No this could be considered a bug. Basically
>>>>
>> pam is
>>
>>>> trying to send an
>>>> audit message to the audit.log.
>>>>
>>>> YOu can add this access, it would allow the
>>>>
>> appache
>>
>>>> process to attempt
>>>> to send audit messages. Since the httpd is
>>>>
>> running as
>>
>>>> non root, it
>>>> might not have the capabilities necessary to send
>>>>
>> them
>>
>>>> Open a bug report on this, since we probably
>>>>
>> should
>>
>>>> dontaudit these
>>>> calls if the boolean to allow pam is turned on.
>>>>
>>>>
>>> dontaudit wouldn't work, apache denies access in
>>>
>> enforcing mode.
>>
>>> Bug 579105 Submitted
>>>
>>> Thank you,
>>>
>>> Sincerely yours,
>>> Vadym Chepkov
>>>
>>>
>>> --
>>> selinux mailing list
>>> selinux@xxxxxxxxxxxxxxxxxxxxxxx
>>> https://admin.fedoraproject.org/mailman/listinfo/selinux
>>>
>>>
>> Vadym, Please open a bug on RHEL5 to add this
>> functionality. I will add
>> it to RHEL6, now
>>
> Dan,
>
> I did open BZ 579105 on RHEL5. By the way is RHEL6 can be downloaded as a beta, perhaps already? I don't see it on RHN, only RHEL5.5-beta
>
> Thanks,
> Vadym
>
>
>
>
>
As I understand it the schedule says Beta 1 will be available April 21.
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