Ensure that 'Auditing' Retention is 'greater than 6 months'

MediumLevel 1Automatedalibaba

Description

Database SQL Audit Retention should be configured to be greater than 90 days. Audit Logs can be used to check for anomalies and give insight into suspected breaches or misuse of information and access. DescribeSQLCollectorRetention ConfigValue (days) must be 180 (6 months) or more for every instance. Iterates every RDS region and instance (DescribeDBInstances). Read-only aliyun CLI calls; credentials and default region come from the CLI's normal profile (aliyun configure, ~/.aliyun/config.json or ALIBABA_CLOUD_* environment variables). JSON output is parsed with sed/awk. A missing CLI or credential fails the check.

How it is checked

Audit method: Shell command

shell

regs=$(aliyun rds DescribeRegions 2>/dev/null) || exit 1
regions=$(printf '%s\n' "$regs" | sed -n 's/.*"RegionId"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' | sort -u)
[ -n "$regions" ] || exit 1
bad=0
for r in $regions; do
  page=1
  while :; do
    out=$(aliyun rds DescribeDBInstances --RegionId "$r" --PageSize 100 --PageNumber "$page" 2>/dev/null) || exit 1
    ids=$(printf '%s\n' "$out" | sed -n 's/.*"DBInstanceId"[[:space:]]*:[[:space:]]*"\([^"]*\)".*/\1/p' | sort -u)
    [ -n "$ids" ] || break
    for i in $ids; do
      s=$(aliyun rds DescribeSQLCollectorRetention --DBInstanceId "$i" 2>/dev/null) || exit 1
      d=$(printf '%s\n' "$s" | sed -n 's/.*"ConfigValue"[[:space:]]*:[[:space:]]*"\{0,1\}\([0-9]\{1,\}\).*/\1/p' | head -n 1)
      [ "${d:-0}" -ge 180 ] || { echo "SQL audit retention ${d:-unset} days: $r $i"; bad=1; }
    done
    set -- $ids
    [ "$#" -lt 100 ] && break
    page=$((page + 1))
  done
done
[ "$bad" -eq 0 ] && echo compliant

Expected output: compliant

How it is fixed

Fix method: Guidance or infrastructure patch

aliyun rds ModifySQLCollectorRetention --DBInstanceId <id> --ConfigValue 180 (or longer), or SQL Explorer > Service Settings > storage duration 6 months or more.

Properties

Operating systems: Any
Tags: alibabards
Reference: CIS Alibaba Cloud Foundation Benchmark v2.0.1 - 6.4 Ensure that 'Auditing' Retention is 'greater than 6 months'

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target alibaba