Cause:
The following SCAP rules configuring Audit included in ANSSI BP28 High profile are applied on aarch64 platform, although they are invalid on this architecture.
- audit_rules_unsuccessful_file_modification_creat
- audit_rules_unsuccessful_file_modification_open
- audit_rules_file_deletion_events_rename
- audit_rules_file_deletion_events_rmdir
- audit_rules_file_deletion_events_unlink
- audit_rules_dac_modification_chmod
- audit_rules_dac_modification_chown
- audit_rules_dac_modification_lchown
Consequence:
Audit fails to start because its configuration contains invalid syscalls.
Workaround (if any):
There are two ways how to workaround this:
1. Remove mentioned rules from the datastream via tailoring.
2. edit files in /etc/audit/rules.d and remove the "-S <syscall>" snippets for the following syscalls:
- creat
- open
- rename
- rmdir
- unlink
- chmod
- chown
- lchown
Result:
The Audit will be able to start and compliance of the system will not be affected in any way.
Description of problem:
anssi_bp28_high profile's audit rules are invalid on aarch64 architecture.
Version-Release number of selected component (if applicable):
scap-security-guide-0.1.69-1.el8
How reproducible:
deterministic
Steps to Reproduce:
1. Remediate installed system using ANSSI High profile:
oscap xccdf eval --profile xccdf_org.ssgproject.content_profile_anssi_bp28_high --progress --remediate /usr/share/xml/scap/ssg/content/ssg-rhel8-ds.xml
2. Examine auditd service status
Actual results:
# systemctl status -l auditd
● auditd.service - Security Auditing Service
Loaded: loaded (/usr/lib/systemd/system/auditd.service; enabled; vendor preset: enabled)
Active: active (running) since Thu 2023-08-17 09:43:05 EDT; 8min ago
Docs: man:auditd(8)
https://github.com/linux-audit/audit-documentation
Process: 769 ExecStartPost=/sbin/augenrules --load (code=exited, status=1/FAILURE)
Process: 759 ExecStart=/sbin/auditd (code=exited, status=0/SUCCESS)
Main PID: 766 (auditd)
Tasks: 2 (limit: 8799)
Memory: 7.6M
CGroup: /system.slice/auditd.service
└─766 /sbin/auditd
Aug 17 09:43:04 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com systemd[1]: Starting Security Auditing Service...
Aug 17 09:43:04 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com auditd[766]: No plugins found, not dispatching events
Aug 17 09:43:04 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com auditd[766]: Init complete, auditd 3.0.7 listening for events (startup state enable)
Aug 17 09:43:05 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com augenrules[801]: Syscall name unknown: creat
Aug 17 09:43:05 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com augenrules[801]: There was an error in line 7 of /etc/audit/audit.rules
====
# augenrules --load
Syscall name unknown: creat
There was an error in line 7 of /etc/audit/audit.rules
====
# head -n7 /etc/audit/audit.rules
## This file is automatically generated from /etc/audit/rules.d
-D
-w /etc/selinux/ -p wa -k MAC-policy
-a always,exit -F arch=b32 -S creat -S ftruncate -S open -S openat -S truncate -F exit=-EACCES -F auid>=1000 -F auid!=unset -F key=access
-a always,exit -F arch=b64 -S creat -S ftruncate -S open -S openat -S truncate -F exit=-EACCES -F auid>=1000 -F auid!=unset -F key=access
====
Even after removing the offending line there are still other errors so audit rules on aarch64 architecture need to be revisited and fixed.
Expected results:
`augenrules --load` successfully loads all configured audit rules.
Additional info:
This issue was hidden as we are also missing service_auditd_enabled rule in the profile, the rule needs to be added into all ANSSI profiles which configure audit.
Comment 3RHEL Program Management
2023-08-31 09:08:21 UTC
Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.
Comment 4RHEL Program Management
2023-08-31 09:10:03 UTC
This BZ has been automatically migrated to the issues.redhat.com Red Hat Issue Tracker. All future work related to this report will be managed there.
To find the migrated issue, look in the "Links" section for a direct link to the new issue location. The issue key will have an icon of 2 footprints next to it, and begin with "RHEL-" followed by an integer. You can also find this issue by visiting https://issues.redhat.com/issues/?jql= and searching the "Bugzilla Bug" field for this BZ's number, e.g. a search like:
"Bugzilla Bug" = 1234567
In the event you have trouble locating or viewing this issue, you can file an issue by sending mail to rh-issues.
Users watching this BZ may not be automatically added to the Jira ticket. Be sure to add yourself to the Watchers field in the Jira issue if you desire to continue following this issue.
Description of problem: anssi_bp28_high profile's audit rules are invalid on aarch64 architecture. Version-Release number of selected component (if applicable): scap-security-guide-0.1.69-1.el8 How reproducible: deterministic Steps to Reproduce: 1. Remediate installed system using ANSSI High profile: oscap xccdf eval --profile xccdf_org.ssgproject.content_profile_anssi_bp28_high --progress --remediate /usr/share/xml/scap/ssg/content/ssg-rhel8-ds.xml 2. Examine auditd service status Actual results: # systemctl status -l auditd ● auditd.service - Security Auditing Service Loaded: loaded (/usr/lib/systemd/system/auditd.service; enabled; vendor preset: enabled) Active: active (running) since Thu 2023-08-17 09:43:05 EDT; 8min ago Docs: man:auditd(8) https://github.com/linux-audit/audit-documentation Process: 769 ExecStartPost=/sbin/augenrules --load (code=exited, status=1/FAILURE) Process: 759 ExecStart=/sbin/auditd (code=exited, status=0/SUCCESS) Main PID: 766 (auditd) Tasks: 2 (limit: 8799) Memory: 7.6M CGroup: /system.slice/auditd.service └─766 /sbin/auditd Aug 17 09:43:04 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com systemd[1]: Starting Security Auditing Service... Aug 17 09:43:04 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com auditd[766]: No plugins found, not dispatching events Aug 17 09:43:04 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com auditd[766]: Init complete, auditd 3.0.7 listening for events (startup state enable) Aug 17 09:43:05 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com augenrules[801]: Syscall name unknown: creat Aug 17 09:43:05 hpe-apollo-cn99xx-14-vm-30.khw4.lab.eng.bos.redhat.com augenrules[801]: There was an error in line 7 of /etc/audit/audit.rules ==== # augenrules --load Syscall name unknown: creat There was an error in line 7 of /etc/audit/audit.rules ==== # head -n7 /etc/audit/audit.rules ## This file is automatically generated from /etc/audit/rules.d -D -w /etc/selinux/ -p wa -k MAC-policy -a always,exit -F arch=b32 -S creat -S ftruncate -S open -S openat -S truncate -F exit=-EACCES -F auid>=1000 -F auid!=unset -F key=access -a always,exit -F arch=b64 -S creat -S ftruncate -S open -S openat -S truncate -F exit=-EACCES -F auid>=1000 -F auid!=unset -F key=access ==== Even after removing the offending line there are still other errors so audit rules on aarch64 architecture need to be revisited and fixed. Expected results: `augenrules --load` successfully loads all configured audit rules. Additional info: