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Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
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files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2020:1007
Description of problem: When hardening the system for STIG, the following /etc/pam.d/sudo line is added: -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- session required pam_tty_audit.so disable=* enable=root open_only -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- With confined users sudoing, this leads to an error seen in /var/log/secure (hence audit not being updated): -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- pam_tty_audit(sudo:session): error setting current audit status: Permission denied -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- It appears that members of the sudodomain attribute cannot perform the "nlmsg_tty_audit" call, whereas unconfined users can, this is missing from the policy: -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- # sesearch -A -s sudodomain -c netlink_audit_socket -p nlmsg_tty_audit # sesearch -A -s unconfined_domain_type -c netlink_audit_socket -p nlmsg_tty_audit Found 1 semantic av rules: allow unconfined_domain_type domain : netlink_audit_socket { ioctl read write create getattr setattr lock relabelfrom relabelto append map bind connect listen accept getopt setopt shutdown recvfrom sendto recv_msg send_msg name_bind nlmsg_read nlmsg_write nlmsg_relay nlmsg_readpriv nlmsg_tty_audit } ; -------- 8< ---------------- 8< ---------------- 8< ---------------- 8< -------- Version-Release number of selected component (if applicable): selinux-policy-3.13.1-229.el7_6.9.noarch How reproducible: Always Steps to Reproduce: 1. Amend /etc/pam.d/sudo as shown below: - add "session required pam_tty_audit.so disable=* enable=root open_only" # cat /etc/pam.d/sudo #%PAM-1.0 auth include system-auth account include system-auth password include system-auth session optional pam_keyinit.so revoke session required pam_limits.so session required pam_tty_audit.so disable=* enable=root open_only session include system-auth 2. Setup a confined user being able to sudo # useradd -Z staff_u -G wheel staff 3. Login as staff and execute sudo $ id -Z staff_u:staff_r:staff_t:s0-s0:c0.c1023 $ sudo -r sysadm_r bash -i # tail /var/log/secure | grep pam_tty_audit Actual results: [...] sudo: pam_tty_audit(sudo:session): error setting current audit status: Permission denied Expected results: [...] sudo: pam_tty_audit(sudo:session): changed status from 0 to 1