TMA-ALIBABA-2.2

Ensure the OSS used to store ActionTrail logs is not publicly accessible

CaoCấp 1Tự độngalibaba

Mô tả

ActionTrail logs a record of every API call made in your Alibaba Cloud account. These logs file are stored in an OSS bucket. It is recommended that the access control list (ACL) of the OSS bucket, which ActionTrail logs to, shall prevent public access to the ActionTrail logs. Allowing public access to ActionTrail log content may aid an adversary in identifying weaknesses in the affected account's use or configuration. Every OSS bucket that a trail delivers to (OssBucketName) must have ACL private (aliyun oss stat). 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.

Cách kiểm tra

Phương pháp kiểm tra: Lệnh shell

shell

out=$(aliyun actiontrail DescribeTrails 2>/dev/null) || exit 1
bs=$(printf '%s\n' "$out" | sed -n 's/.*"OssBucketName"[[:space:]]*:[[:space:]]*"\([^"]\{1,\}\)".*/\1/p' | sort -u)
bad=0
for b in $bs; do
  st=$(aliyun oss stat "oss://$b" 2>/dev/null) || exit 1
  acl=$(printf '%s\n' "$st" | sed -n 's/^[[:space:]]*ACL[[:space:]]*:[[:space:]]*\([^[:space:]]*\).*/\1/p' | head -n 1)
  [ "$acl" = private ] || { echo "trail bucket ACL $acl: $b"; bad=1; }
done
[ "$bad" -eq 0 ] && echo compliant

Đầu ra mong đợi: compliant

Cách khắc phục

Phương pháp khắc phục: Hướng dẫn hoặc bản vá hạ tầng

aliyun oss set-acl oss://<bucket> private -b for each listed bucket and review its bucket policy for anonymous grants.

Thuộc tính

Hệ điều hành: Bất kỳ
Thẻ: alibabalogging
Tham chiếu: CIS Alibaba Cloud Foundation Benchmark v2.0.1 - 2.2 Ensure the OSS used to store ActionTrail logs is not publicly accessible

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shell

tmaegis scan --target alibaba