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Bug 1623052

Summary: SELinux prevents amandad from unlinking the /var/tmp/host_0 file
Product: Red Hat Enterprise Linux 7 Reporter: Milos Malik <mmalik>
Component: selinux-policyAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED WONTFIX QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.6CC: lvrabec, mgrepl, mmalik, plautrba, ssekidde, vmojzis, zpytela
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-03-14 10:52:07 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:

Description Milos Malik 2018-08-28 12:19:29 UTC 
Description of problem:

Version-Release number of selected component (if applicable):
amanda-3.3.3-21.el7.x86_64
amanda-client-3.3.3-21.el7.x86_64
amanda-libs-3.3.3-21.el7.x86_64
amanda-server-3.3.3-21.el7.x86_64
selinux-policy-3.13.1-220.el7.noarch
selinux-policy-devel-3.13.1-220.el7.noarch
selinux-policy-doc-3.13.1-220.el7.noarch
selinux-policy-minimum-3.13.1-220.el7.noarch
selinux-policy-mls-3.13.1-220.el7.noarch
selinux-policy-sandbox-3.13.1-220.el7.noarch
selinux-policy-targeted-3.13.1-220.el7.noarch

How reproducible:
 * always

Steps to Reproduce:
1. get a RHEL-7.6 or RHEL-ALT-7.6 machine (targeted policy is active)
2. run following automated TC:
 * /CoreOS/selinux-policy/Regression/bz733494-amanda-and-similar
3. search for SELinux denials

Actual results:
----
type=PROCTITLE msg=audit(08/28/2018 08:11:04.960:2780) : proctitle=/usr/sbin/amandad -auth=krb5 amdump amindexd amidxtaped 
type=PATH msg=audit(08/28/2018 08:11:04.960:2780) : item=0 name=/var/tmp/host_0 inode=931630 dev=fd:00 mode=file,600 ouid=root ogid=disk rdev=00:00 obj=system_u:object_r:krb5_host_rcache_t:s0 objtype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 
type=CWD msg=audit(08/28/2018 08:11:04.960:2780) :  cwd=/var/log/amanda 
type=SYSCALL msg=audit(08/28/2018 08:11:04.960:2780) : arch=x86_64 syscall=open success=no exit=EACCES(Permission denied) a0=0x555ff44cb960 a1=O_RDWR a2=0x180 a3=0x2 items=1 ppid=1 pid=125954 auid=unset uid=root gid=disk euid=root suid=root fsuid=root egid=disk sgid=disk fsgid=disk tty=(none) ses=unset comm=amandad exe=/usr/lib64/amanda/amandad subj=system_u:system_r:amanda_t:s0 key=(null) 
type=AVC msg=audit(08/28/2018 08:11:04.960:2780) : avc:  denied  { write } for  pid=125954 comm=amandad name=host_0 dev="dm-0" ino=931630 scontext=system_u:system_r:amanda_t:s0 tcontext=system_u:object_r:krb5_host_rcache_t:s0 tclass=file permissive=0 
----
type=PROCTITLE msg=audit(08/28/2018 08:11:04.960:2781) : proctitle=/usr/sbin/amandad -auth=krb5 amdump amindexd amidxtaped 
type=PATH msg=audit(08/28/2018 08:11:04.960:2781) : item=1 name=/var/tmp/host_0 inode=931630 dev=fd:00 mode=file,600 ouid=root ogid=disk rdev=00:00 obj=system_u:object_r:krb5_host_rcache_t:s0 objtype=DELETE cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 
type=PATH msg=audit(08/28/2018 08:11:04.960:2781) : item=0 name=/var/tmp/ inode=69 dev=fd:00 mode=dir,sticky,777 ouid=root ogid=root rdev=00:00 obj=system_u:object_r:tmp_t:s0 objtype=PARENT cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 
type=CWD msg=audit(08/28/2018 08:11:04.960:2781) :  cwd=/var/log/amanda 
type=SYSCALL msg=audit(08/28/2018 08:11:04.960:2781) : arch=x86_64 syscall=unlink success=no exit=EACCES(Permission denied) a0=0x555ff44cb960 a1=0x7f668cc54790 a2=0x555ff44cb960 a3=0x7 items=2 ppid=1 pid=125954 auid=unset uid=root gid=disk euid=root suid=root fsuid=root egid=disk sgid=disk fsgid=disk tty=(none) ses=unset comm=amandad exe=/usr/lib64/amanda/amandad subj=system_u:system_r:amanda_t:s0 key=(null) 
type=AVC msg=audit(08/28/2018 08:11:04.960:2781) : avc:  denied  { unlink } for  pid=125954 comm=amandad name=host_0 dev="dm-0" ino=931630 scontext=system_u:system_r:amanda_t:s0 tcontext=system_u:object_r:krb5_host_rcache_t:s0 tclass=file permissive=0 
----

Expected results:
 * no SELinux denials
Comment 1 Zdenek Pytela 2019-03-14 10:52:07 UTC 
This issue was not selected to be included in Red Hat Enterprise Linux 7.7 because it is seen either as low or moderate impact to a small number of use-cases. The next release will be in Maintenance Support 1 Phase, which means that qualified Critical and Important Security errata advisories (RHSAs) and Urgent Priority Bug Fix errata advisories (RHBAs) may be released as they become available.

We will now close this issue, but if you believe that it qualifies for the Maintenance Support 1 Phase, please re-open; otherwise, we recommend moving the request to Red Hat Enterprise Linux 8 if applicable.