Red Hat Bugzilla – Bug 1479383
stunnel >=5.41 needs additional rules.
Last modified: 2018-04-10 08:37:48 EDT
Description of problem: Newer versions need additional selinux rules to work. Version-Release number of selected component (if applicable): selinux-policy-targeted-3.13.1-102.el7_3.16.noarch audit: type=AVC msg=audit(1502196618.804:2350): avc: denied { sys_nice } for pid=50312 comm="stunnel" capability=23 scontext=system_u:system_r:stunnel_t:s0 tcontext=system_u:system_r:stunnel_t:s0 tclass=capability type=AVC msg=audit(1502196618.804:2350): avc: denied { setsched } for pid=50312 comm="stunnel" scontext=system_u:system_r:stunnel_t:s0 tcontext=system_u:system_r:stunnel_t:s0 tclass=process Additional rule: require { type stunnel_t; class capability { dac_override dac_read_search sys_nice }; class process setsched; } #============= stunnel_t ============== allow stunnel_t self:capability { dac_override dac_read_search sys_nice }; allow stunnel_t self:process setsched;
# rpm -qa selinux-policy\* stunnel\* | sort selinux-policy-3.13.1-166.el7.noarch selinux-policy-devel-3.13.1-166.el7.noarch selinux-policy-targeted-3.13.1-166.el7.noarch stunnel-5.41-3.el7.x86_64 (rebuilt from fc27.src.rpm) # Following SELinux denials appeared in enforcing mode: ---- type=PROCTITLE msg=audit(08/18/2017 11:12:21.183:282) : proctitle=/usr/bin/stunnel type=SYSCALL msg=audit(08/18/2017 11:12:21.183:282) : arch=x86_64 syscall=sched_setscheduler success=no exit=EACCES(Permission denied) a0=0x7245 a1=SCHED_BATCH a2=0x7f33d0aaadc0 a3=0x7f33d0aaaaa0 items=0 ppid=25205 pid=29252 auid=root uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=4 comm=stunnel exe=/usr/bin/stunnel subj=system_u:system_r:stunnel_t:s0 key=(null) type=AVC msg=audit(08/18/2017 11:12:21.183:282) : avc: denied { setsched } for pid=29252 comm=stunnel scontext=system_u:system_r:stunnel_t:s0 tcontext=system_u:system_r:stunnel_t:s0 tclass=process type=AVC msg=audit(08/18/2017 11:12:21.183:282) : avc: denied { sys_nice } for pid=29252 comm=stunnel capability=sys_nice scontext=system_u:system_r:stunnel_t:s0 tcontext=system_u:system_r:stunnel_t:s0 tclass=capability ----
Following SELinux denials appeared in permissive mode: ---- type=PROCTITLE msg=audit(08/18/2017 11:17:19.554:293) : proctitle=/usr/bin/stunnel type=SYSCALL msg=audit(08/18/2017 11:17:19.554:293) : arch=x86_64 syscall=sched_setscheduler success=yes exit=0 a0=0x1053 a1=SCHED_BATCH a2=0x7f96d86a1dc0 a3=0x7f96d86a1aa0 items=0 ppid=663 pid=4178 auid=root uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=pts0 ses=4 comm=stunnel exe=/usr/bin/stunnel subj=system_u:system_r:stunnel_t:s0 key=(null) type=AVC msg=audit(08/18/2017 11:17:19.554:293) : avc: denied { setsched } for pid=4178 comm=stunnel scontext=system_u:system_r:stunnel_t:s0 tcontext=system_u:system_r:stunnel_t:s0 tclass=process type=AVC msg=audit(08/18/2017 11:17:19.554:293) : avc: denied { sys_nice } for pid=4178 comm=stunnel capability=sys_nice scontext=system_u:system_r:stunnel_t:s0 tcontext=system_u:system_r:stunnel_t:s0 tclass=capability ----
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://access.redhat.com/errata/RHBA-2018:0763