Bug 1773672

Summary: SELinux prevents confined users from running lldptool or vdptool
Product: Red Hat Enterprise Linux 8 Reporter: Milos Malik <mmalik>
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED WONTFIX QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.2CC: lvrabec, mmalik, plautrba, ssekidde, zpytela
Target Milestone: rcKeywords: Triaged
Target Release: 8.2Flags: pm-rhel: mirror+
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-05-07 18:00:04 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: 1778780    

Description Milos Malik 2019-11-18 16:57:40 UTC
Description of problem:

Version-Release number of selected component (if applicable):
lldpad-1.0.1-13.git036e314.el8.x86_64
lldpd-1.0.1-2.el8.x86_64
selinux-policy-3.14.3-27.el8.noarch
selinux-policy-devel-3.14.3-27.el8.noarch
selinux-policy-doc-3.14.3-27.el8.noarch
selinux-policy-minimum-3.14.3-27.el8.noarch
selinux-policy-mls-3.14.3-27.el8.noarch
selinux-policy-sandbox-3.14.3-27.el8.noarch
selinux-policy-targeted-3.14.3-27.el8.noarch

How reproducible:
 * always

Steps to Reproduce:
1. get a RHEL-8.1 machine (targeted policy is active)
2. start the lldpad service
3. log in as a confined user (user_u, staff_u, guest_u, xguest_u, sysadm_u)
4. run any of the commands:
  $ lldptool -p
  $ vdptool -p
5. search for SELinux denials

Actual results:
----
type=PROCTITLE msg=audit(11/18/2019 17:29:12.479:1121) : proctitle=vdptool 
type=SOCKADDR msg=audit(11/18/2019 17:29:12.479:1121) : saddr={ saddr_fam=local path=/com/intel/lldpad } 
type=SYSCALL msg=audit(11/18/2019 17:29:12.479:1121) : arch=x86_64 syscall=connect success=no exit=EACCES(Permission denied) a0=0x3 a1=0x55f39a3d4f02 a2=0x14 a3=0x0 items=0 ppid=12504 pid=18508 auid=sysadm-user uid=sysadm-user gid=sysadm-user euid=sysadm-user suid=sysadm-user fsuid=sysadm-user egid=sysadm-user sgid=sysadm-user fsgid=sysadm-user tty=pts1 ses=33 comm=vdptool exe=/usr/sbin/vdptool subj=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 key=(null) 
type=AVC msg=audit(11/18/2019 17:29:12.479:1121) : avc:  denied  { sendto } for  pid=18508 comm=vdptool path=/com/intel/lldpad scontext=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 tcontext=system_u:system_r:lldpad_t:s0 tclass=unix_dgram_socket permissive=0 
----
type=PROCTITLE msg=audit(11/18/2019 17:29:23.098:1122) : proctitle=lldptool 
type=SOCKADDR msg=audit(11/18/2019 17:29:23.098:1122) : saddr={ saddr_fam=local path=/com/intel/lldpad } 
type=SYSCALL msg=audit(11/18/2019 17:29:23.098:1122) : arch=x86_64 syscall=connect success=no exit=EACCES(Permission denied) a0=0x3 a1=0x564c1578f722 a2=0x14 a3=0x0 items=0 ppid=12504 pid=18525 auid=sysadm-user uid=sysadm-user gid=sysadm-user euid=sysadm-user suid=sysadm-user fsuid=sysadm-user egid=sysadm-user sgid=sysadm-user fsgid=sysadm-user tty=pts1 ses=33 comm=lldptool exe=/usr/sbin/lldptool subj=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 key=(null) 
type=AVC msg=audit(11/18/2019 17:29:23.098:1122) : avc:  denied  { sendto } for  pid=18525 comm=lldptool path=/com/intel/lldpad scontext=sysadm_u:sysadm_r:sysadm_t:s0-s0:c0.c1023 tcontext=system_u:system_r:lldpad_t:s0 tclass=unix_dgram_socket permissive=0 
----
type=PROCTITLE msg=audit(11/18/2019 17:49:52.794:1288) : proctitle=lldptool -p 
type=SOCKADDR msg=audit(11/18/2019 17:49:52.794:1288) : saddr={ saddr_fam=local path=/com/intel/lldpad } 
type=SYSCALL msg=audit(11/18/2019 17:49:52.794:1288) : arch=x86_64 syscall=connect success=no exit=EACCES(Permission denied) a0=0x3 a1=0x55e051091312 a2=0x14 a3=0x0 items=0 ppid=19065 pid=19959 auid=staff-user uid=staff-user gid=staff-user euid=staff-user suid=staff-user fsuid=staff-user egid=staff-user sgid=staff-user fsgid=staff-user tty=tty2 ses=66 comm=lldptool exe=/usr/sbin/lldptool subj=staff_u:staff_r:staff_t:s0-s0:c0.c1023 key=(null) 
type=AVC msg=audit(11/18/2019 17:49:52.794:1288) : avc:  denied  { sendto } for  pid=19959 comm=lldptool path=/com/intel/lldpad scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=system_u:system_r:lldpad_t:s0 tclass=unix_dgram_socket permissive=0 
----
type=PROCTITLE msg=audit(11/18/2019 17:49:57.792:1289) : proctitle=vdptool -p 
type=SOCKADDR msg=audit(11/18/2019 17:49:57.792:1289) : saddr={ saddr_fam=local path=/com/intel/lldpad } 
type=SYSCALL msg=audit(11/18/2019 17:49:57.792:1289) : arch=x86_64 syscall=connect success=no exit=EACCES(Permission denied) a0=0x3 a1=0x55f8a2743312 a2=0x14 a3=0x0 items=0 ppid=19065 pid=19973 auid=staff-user uid=staff-user gid=staff-user euid=staff-user suid=staff-user fsuid=staff-user egid=staff-user sgid=staff-user fsgid=staff-user tty=tty2 ses=66 comm=vdptool exe=/usr/sbin/vdptool subj=staff_u:staff_r:staff_t:s0-s0:c0.c1023 key=(null) 
type=AVC msg=audit(11/18/2019 17:49:57.792:1289) : avc:  denied  { sendto } for  pid=19973 comm=vdptool path=/com/intel/lldpad scontext=staff_u:staff_r:staff_t:s0-s0:c0.c1023 tcontext=system_u:system_r:lldpad_t:s0 tclass=unix_dgram_socket permissive=0 
----

Expected results:
 * no SELinux denials
 * programs like lldptool, vdptool work as expected in enforcing mode

Comment 2 Lukas Vrabec 2019-11-25 17:11:43 UTC
Bug is not in post state and patch is not ready, therefore removing ci_tests_implemented keyword. 

Milos, please make sure that tests related to this ticket is no tagged with CI-TIER1 tag. 

Thanks,
Lukas.

Comment 5 Zdenek Pytela 2021-05-07 18:00:04 UTC
This bug has not been acknowledged by the subsystem to be resolved during in RHEL 8, hence closing.
If you believe the decision needs to be reconsidered, please adjust severity accordingly and bring out justification.