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Bug 2051851

Summary: On RHEL8 tomcat_t domain is prevented to create .pki directory on tomcat startup
Product: Red Hat Enterprise Linux 8 Reporter: Lukas Pramuk <lpramuk>
Component: pki-servlet-engineAssignee: Coty Sutherland <csutherl>
Status: CLOSED WONTFIX QA Contact: PKI QE <bugzilla-pkiqe>
Severity: medium Docs Contact:
Priority: unspecified    
Version: ---CC: nmoumoul, peter.vreman, redakkan, rhcs-maint
Target Milestone: rcKeywords: Triaged
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
: 2052032 (view as bug list) Environment:
Last Closed: 2022-08-17 07:28:41 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: 2052032    

Description Lukas Pramuk 2022-02-08 07:55:56 UTC
Description of problem:
tomcat_t domain is prevented to create .pki directory on tomcat startup
This happens only on RHEL8

Version-Release number of selected component (if applicable):
Satellite 7.0.0
candlepin-selinux-4.1.8-1.el8sat.noarch
tomcatjss-7.7.0-1.module+el8.5.0+11983+6ba118b4.noarch
pki-servlet-engine-9.0.30-3.module+el8.5.0+11388+9e95fe00.noarch


How reproducible:
deterministic

Steps to Reproduce:
1. (Re-)start tomcat service
2. Check for denials

# audit2allow -a


#============= tomcat_t ==============
allow tomcat_t usr_t:dir create;


Actual results:
selinux denials present

Expected results:
no selinux denials

Additional info:
type=AVC msg=audit(1644245745.983:695): avc:  denied  { create } for  pid=14051 comm="java" name=".pki" scontext=system_u:system_r:tomcat_t:s0 tcontext=system_u:object_r:usr_t:s0 tclass=dir permissive=0

Comment 2 Lukas Pramuk 2022-02-08 15:24:50 UTC
Nothing is impacted. Tomcat starts successfully. However having denials in OS is not a good practice.
I suppose directory is ~/.pki (for user tomcat is running under). Let me set permissive mode to find out:

# setenforce 0

# systemctl restart tomcat

# find / -name .pki
/usr/share/tomcat/.pki

# ll -dZ /usr/share/tomcat/.pki
drwxr-----. 3 tomcat tomcat system_u:object_r:usr_t:s0 19 Feb  8 10:18 /usr/share/tomcat/.pki

# ll -Z /usr/share/tomcat/.pki
total 0
drwxr-----. 2 tomcat tomcat system_u:object_r:usr_t:s0 24 Feb  8 10:18 nssdb


I also tried with clean RHEL8.5 and installed tomcatjss and started tomcat service and no denial happened (otherwise I'd have filed the BZ against tomcat)

Comment 3 Lukas Pramuk 2022-02-08 15:29:02 UTC
# ll -Z /usr/share/tomcat/.pki/nssdb/
total 4
-rw-------. 1 tomcat tomcat system_u:object_r:usr_t:s0 1020 Feb  8 10:18 pkcs11.txt

Comment 4 Nikos Moumoulidis 2022-02-17 11:45:28 UTC
It looks like this is happening when candlepin starts and performs NSS DB initialization and adding of the JSS provider: https://github.com/candlepin/candlepin/blob/84c07e0b771b8f3a6839f4b5556955a6557c77f9/src/main/java/org/candlepin/pki/impl/JSSProviderLoader.java#L90-L99

However, since this is tomcat itself creating a directory under it's own home directory (/usr/share/tomcat/), allowing this action is not up to candlepin, but tomcat, so I am switching the component to that.

Comment 7 RHEL Program Management 2022-08-17 07:28:41 UTC
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.