Ensure install.log Is Retained for 365 or More Days and No Maximum Size

中级别 1自动化macos

说明

macOS writes information pertaining to system-related events to the file /var/log/install.log and has a configurable retention policy for this file. The default logging setting limits the file size of the logs and the maximum size for all logs. The default allows for an errant application to fill the log files and does not enforce sufficient log retention. The Benchmark recommends a value based on standard use cases. The value should align with local requirements within the organization. The default value has an "all_max" file limitation, no reference to a minimum retention, and a less precise rotation argument. The all_max flag control will remove old log entries based only on the size of the log files. Log size can vary widely depending on how verbose installing applications are in their log entries. The decision here is to ensure that logs go back a year, and depending on the appli...

检查方式

审计方法: Shell 命令

shell

f=/etc/asl/com.apple.install
[ -r "$f" ] || exit 1
t=$(/usr/bin/grep -io 'ttl=[0-9]*' "$f" | /usr/bin/head -1 | /usr/bin/cut -d= -f2)
if [ -n "$t" ] && [ "$t" -ge 365 ] && ! /usr/bin/grep -qi 'all_max=' "$f"; then echo compliant; else echo "ttl=${t:-unset}; all_max present or ttl < 365"; fi

预期输出: compliant

修复方式

修复方法: 操作指南或基础设施补丁

Terminal Method: Perform the following to ensure that install logs are retained for at least 365 days: Edit the /etc/asl/com.apple.install file and add or modify the ttl value to 365 or greater on the file line. Also, remove the all_max= setting and value from the file line.

属性

操作系统: macos-14
标签: loggingmacossonoma
参考: CIS Apple macOS 14.0 Sonoma Benchmark v3.1.0 - 3.3 Ensure install.log Is Retained for 365 or More Days and No Maximum Size

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target macos