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ubuntu1604:1:1:11 [2017/05/02 01:30] Piotr Kłoczewski utworzono |
ubuntu1604:1:1:11 [2017/05/02 12:25] (current) Piotr Kłoczewski |
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| ====== 1.1.11 Ensure separate partition exists for /var/log/audit (Scored) ====== | ====== 1.1.11 Ensure separate partition exists for /var/log/audit (Scored) ====== | ||
| - | **Profile Applicability:** \\ | + | =====Profile Applicability===== |
| - | + | <code> | |
| - | <note>Level 2 - Server \\ | + | Level 2 - Server |
| - | Level 2 - Workstation</note> | + | Level 2 - Workstation |
| - | + | </code> | |
| - | **Description:** \\ | + | =====Description===== |
| - | The auditing daemon, ''auditd'', stores log data in the ''/var/log/audit'' directory. \\ \\ | + | The auditing daemon, ''auditd'', stores log data in the ''/var/log/audit'' directory. |
| - | **Rationale:** \\ | + | =====Rationale===== |
| - | There are two important reasons to ensure that data gathered by ''auditd'' is stored on a separate partition: protection against resource exhaustion (since the ''audit.log'' file can grow quite large) and protection of audit data. The audit daemon calculates how much free space is left and performs actions based on the results. If other processes (such as ''syslog'') consume space in the same partition as ''auditd'', it may not perform as desired. \\ \\ | + | There are two important reasons to ensure that data gathered by ''auditd'' is stored on a separate partition: protection against resource exhaustion (since the ''audit.log'' file can grow quite large) and protection of audit data. The audit daemon calculates how much free space is left and performs actions based on the results. If other processes (such as ''syslog'') consume space in the same partition as ''auditd'', it may not perform as desired. |
| - | **Audit:** \\ | + | =====Audit===== |
| Run the following command and verify output shows ''/var/log/audit'' is mounted: \\ | Run the following command and verify output shows ''/var/log/audit'' is mounted: \\ | ||
| <Code:bash> | <Code:bash> | ||
| Line 15: | Line 15: | ||
| /dev/xvdi1 on /var/log/audit type ext4 (rw,relatime,data=ordered) | /dev/xvdi1 on /var/log/audit type ext4 (rw,relatime,data=ordered) | ||
| </Code> | </Code> | ||
| - | \\ | + | =====Remediation===== |
| - | **Remediation:** \\ | + | |
| For new installations, during installation create a custom partition setup and specify a separate partition for ''/var/log/audit''. | For new installations, during installation create a custom partition setup and specify a separate partition for ''/var/log/audit''. | ||
| - | For systems that were previously installed, create a new partition and configure ''/etc/fstab'' as appropriate. \\ \\ | + | For systems that were previously installed, create a new partition and configure ''/etc/fstab'' as appropriate. |
| - | **Impact:** \\ | + | =====Impact===== |
| - | Resizing filesystems is a common activity in cloud-hosted servers. Separate filesystem partitions may prevent successful resizing, or may require the installation of additional tools solely for the purpose of resizing operations. The use of these additional tools may introduce their own security considerations. \\ \\ | + | Resizing filesystems is a common activity in cloud-hosted servers. Separate filesystem partitions may prevent successful resizing, or may require the installation of additional tools solely for the purpose of resizing operations. The use of these additional tools may introduce their own security considerations. |
| - | **References:** \\ | + | =====References===== |
| - | AJ Lewis, "LVM HOWTO", [[http://tldp.org/HOWTO/LVM-HOWTO/]] \\ \\ | + | AJ Lewis, "LVM HOWTO", [[http://tldp.org/HOWTO/LVM-HOWTO/]] |
Piotr Kłoczewski
