TMA-ALIBABA-2.2
Ensure the OSS used to store ActionTrail logs is not publicly accessible
Description
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.
Méthode de vérification
Méthode d'audit: Commande 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- Sortie attendue
compliant
Méthode de correction
Méthode de correction: Recommandation ou correctif d'infrastructure
aliyun oss set-acl oss://<bucket> private -b for each listed bucket and review its bucket policy for anonymous grants.
Propriétés
- Systèmes d'exploitation
- Tous
- Étiquettes
- alibabalogging
- Référence
- CIS Alibaba Cloud Foundation Benchmark v2.0.1 - 2.2 Ensure the OSS used to store ActionTrail logs is not publicly accessible
Vérifier cet hôte
Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.
tmaegis scan --target alibaba