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Description of problem: Version-Release number of selected component (if applicable): selinux-policy-minimum-3.7.19-85.el6.noarch selinux-policy-doc-3.7.19-85.el6.noarch selinux-policy-targeted-3.7.19-85.el6.noarch selinux-policy-3.7.19-85.el6.noarch selinux-policy-mls-3.7.19-85.el6.noarch How reproducible: always Steps to Reproduce: 1) create an staff_u user 2) set a password for the user 3) allow the user to run w via sudo ( echo "USERNAME ALL = (ALL) /usr/bin/w" >> /etc/sudoers ) 4) log in as the user (works in both SSH session and X session) 5) run "sudo -r unconfined_r w" (role change from staff_r to unconfined_r is allowed) $ sudo -r unconfined_r w [sudo] password for sudotester: sudo: unable to get default type for role unconfined_r sudo: unable to execute /usr/bin/w: Invalid argument 6) run "sudo -r guest_r w" (role change from staff_r to guest_r is not allowed) $ sudo -r guest_r w [sudo] password for sudotester: sudo: unable to get default type for role guest_r sudo: unable to execute /usr/bin/w: Invalid argument Actual results: ---- time->Tue Apr 19 06:55:05 2011 type=SYSCALL msg=audit(1303210505.672:41918): arch=c000003e syscall=137 success=no exit=-13 a0=7fcd0ce368d0 a1=7fff5ac75d40 a2=7fff5ac75cb0 a3=7fff5ac75a10 items=0 ppid=4800 pid=4821 auid=501 uid=0 gid=502 euid=0 suid=0 fsuid=0 egid=502 sgid=502 fsgid=502 tty=pts2 ses=32 comm="sudo" exe="/usr/bin/sudo" subj=staff_u:staff_r:staff_sudo_t:s0 key=(null) type=AVC msg=audit(1303210505.672:41918): avc: denied { getattr } for pid=4821 comm="sudo" name="/" dev=devpts ino=1 scontext=staff_u:staff_r:staff_sudo_t:s0 tcontext=system_u:object_r:devpts_t:s0 tclass=filesystem ---- time->Tue Apr 19 06:55:05 2011 type=SYSCALL msg=audit(1303210505.752:41922): arch=c000003e syscall=2 success=no exit=-13 a0=7fcd0ce54d80 a1=0 a2=1b6 a3=0 items=0 ppid=4821 pid=4825 auid=501 uid=0 gid=502 euid=0 suid=0 fsuid=0 egid=502 sgid=502 fsgid=502 tty=pts2 ses=32 comm="sudo" exe="/usr/bin/sudo" subj=staff_u:staff_r:staff_sudo_t:s0 key=(null) type=AVC msg=audit(1303210505.752:41922): avc: denied { read } for pid=4825 comm="sudo" name="default_type" dev=dm-0 ino=132104 scontext=staff_u:staff_r:staff_sudo_t:s0 tcontext=system_u:object_r:default_context_t:s0 tclass=file ---- Expected results: no AVCs
Did yo try to allow staff_sudo_t to read default_context_t type?
Steps 5 and 6 described in comment#0 lead to 4 AVCs in enforcing mode. "Actual results" section shows the unique ones.
Following module solved my problem. I don't see any AVCs in enforcing mode when running the automated test. module mypol 1.0; require { type devpts_t; type default_context_t; type staff_sudo_t; class file { read getattr open }; class filesystem getattr; } #============= staff_sudo_t ============== allow staff_sudo_t default_context_t:file { read getattr open }; allow staff_sudo_t devpts_t:filesystem getattr;
Looks good to me.
I will add. It works also for me.
Fixed in selinux-policy-3.7.19-87.el6
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0526.html