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Bug 1362688

Summary: p11_child denied access to ipc_lock
Product: Red Hat Enterprise Linux 7 Reporter: Roshni <rpattath>
Component: selinux-policyAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.3CC: aakkiang, jhrozek, lvrabec, mgrepl, mmalik, plautrba, pvrabec, ssekidde
Target Milestone: rcKeywords: TestBlocker
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: selinux-policy-3.13.1-93.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-11-04 02:35:45 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1267656    

Description Roshni 2016-08-02 21:01:59 UTC 
Description of problem:
p11_child denied access to ipc_lock

Version-Release number of selected component (if applicable):
selinux-policy-3.13.1-92.el7
sssd-1.14.0-14.el7

How reproducible:
always

Steps to Reproduce:
1. Smartcard with certificates issued by IPA CA fails to login
2.
3.

Actual results:
Smartcard login fails

Expected results:
Smartcard login should be successful

Additional info:
SELinux is preventing /usr/libexec/sssd/p11_child from using the ipc_lock capability.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that p11_child should have the ipc_lock capability by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'p11_child' --raw | audit2allow -M my-p11child
# semodule -i my-p11child.pp

Additional Information:
Source Context                system_u:system_r:sssd_t:s0
Target Context                system_u:system_r:sssd_t:s0
Target Objects                Unknown [ capability ]
Source                        p11_child
Source Path                   /usr/libexec/sssd/p11_child
Port                          <Unknown>
Host                          dhcp129-123.testrelm.test
Source RPM Packages           sssd-common-1.14.0-14.el7.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-92.el7.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     dhcp129-123.testrelm.test
Platform                      Linux dhcp129-123.testrelm.test
                              3.10.0-481.el7.x86_64 #1 SMP Wed Jul 27 18:24:27
                              EDT 2016 x86_64 x86_64
Alert Count                   1
First Seen                    2016-08-02 16:45:55 EDT
Last Seen                     2016-08-02 16:45:55 EDT
Local ID                      e7a3a2d1-e4c0-4094-b423-4ffcc979625b

Raw Audit Messages
type=AVC msg=audit(1470170755.572:240): avc:  denied  { ipc_lock } for  pid=4462 comm="p11_child" capability=14  scontext=system_u:system_r:sssd_t:s0 tcontext=system_u:system_r:sssd_t:s0 tclass=capability


type=SYSCALL msg=audit(1470170755.572:240): arch=x86_64 syscall=mlock success=yes exit=0 a0=7f0aa9fb5a80 a1=6 a2=28 a3=7ffebc8e3b20 items=0 ppid=4269 pid=4462 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=p11_child exe=/usr/libexec/sssd/p11_child subj=system_u:system_r:sssd_t:s0 key=(null)

Hash: p11_child,sssd_t,sssd_t,capability,ipc_lock
Comment 2 Roshni 2016-08-03 15:31:31 UTC 
Seeing the following when using a card that has certs issued by RHCS CA. Please let me know if I have to open a new bug for this

type=USER_AUTH msg=audit(1470237856.031:203): pid=2926 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 msg='op=PAM:authentication grantors=? acct="ipasmartcarduser1" exe="/usr/libexec/gdm-session-worker" hostname=? addr=? terminal=? res=failed'
type=USER_LOGIN msg=audit(1470237856.032:204): pid=2926 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 msg='uid=1023600005 exe="/usr/libexec/gdm-session-worker" hostname=? addr=? terminal=? res=failed'
type=SERVICE_START msg=audit(1470237857.799:205): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=fprintd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
type=AVC msg=audit(1470237858.143:206): avc:  denied  { name_connect } for  pid=2962 comm="p11_child" dest=8080 scontext=system_u:system_r:sssd_t:s0 tcontext=system_u:object_r:http_cache_port_t:s0 tclass=tcp_socket
type=SYSCALL msg=audit(1470237858.143:206): arch=c000003e syscall=42 success=no exit=-13 a0=c a1=7ffe2c9ca110 a2=10 a3=7ffe2c9c9c80 items=0 ppid=853 pid=2962 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="p11_child" exe="/usr/libexec/sssd/p11_child" subj=system_u:system_r:sssd_t:s0 key=(null)
type=AVC msg=audit(1470237858.163:207): avc:  denied  { name_connect } for  pid=2962 comm="p11_child" dest=8080 scontext=system_u:system_r:sssd_t:s0 tcontext=system_u:object_r:http_cache_port_t:s0 tclass=tcp_socket
type=SYSCALL msg=audit(1470237858.163:207): arch=c000003e syscall=42 success=no exit=-13 a0=c a1=7ffe2c9ca110 a2=10 a3=b items=0 ppid=853 pid=2962 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="p11_child" exe="/usr/libexec/sssd/p11_child" subj=system_u:system_r:sssd_t:s0 key=(null)
Comment 4 Asha Akkiangady 2016-08-08 14:57:41 UTC 
This bug is a blocker for testing IPA/SSSD smart card feature.
Comment 10 errata-xmlrpc 2016-11-04 02:35:45 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2283.html