CCE-95421-4| Platform: cpe:/o:amazon:linux:2, cpe:/o:centos:centos:7, cpe:/o:oracle:linux:7, cpe:/o:oracle:linux:8, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:9 | Date: (C)2021-03-05 (M)2023-07-04 |
Description: The backlog limit has a default setting of 64
Rationale: The backlog limit has a default setting of 64 during boot if audit=1, then the backlog will hold 64 records. If more that 64 records are created during boot, auditd records will be lost and potential malicious activity could go undetected.
Remediation:
Edit /etc/default/grub and add audit_backlog_limit=BACKLOG SIZE to GRUB_CMDLINE_LINUX:
Example GRUB_CMDLINE_LINUX="audit_backlog_limit=8192"
Run the following command to update the grub2 configuration:
# grub2-mkconfig -o /boot/grub2/grub.cfg
Parameter:
[8192]
Technical Mechanism:
Edit /etc/default/grub and add audit_backlog_limit=BACKLOG SIZE to GRUB_CMDLINE_LINUX: /xhtml:p
Example GRUB_CMDLINE_LINUX="audit_backlog_limit=8192"
Run the following command to update the grub2 configuration:
# grub2-mkconfig -o /boot/grub2/grub.cfg
| CCSS Severity: | CCSS Metrics: |
| CCSS Score : 7.3 | Attack Vector: NETWORK |
| Exploit Score: 3.9 | Attack Complexity: LOW |
| Impact Score: 3.4 | Privileges Required: NONE |
| Severity: HIGH | User Interaction: NONE |
| Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L | Scope: UNCHANGED |
| | Confidentiality: LOW |
| | Integrity: LOW |
| | Availability: LOW |
| | |
References: | Resource Id | Reference |
|---|
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:68572 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:72972 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:84270 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:72867 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:72030 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:72658 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:72761 |
| SCAP Repo OVAL Definition | oval:org.secpod.oval:def:72396 |
