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. Audit: Requires ttl >= 365 and no all_max= setting in /etc/asl/com.apple.install.

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: 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-26
标签: macoslogging-auditing
参考: CIS Apple macOS 26 Tahoe Benchmark v1.1.0 - 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