December 2023
Intermediate to advanced
368 pages
11h 21m
Japanese
Content preview from AWS継続的セキュリティ実践ガイド ログの収集／分析による監視体制の構築
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『AWS 継続的セキュリティ実践ガイド』：[2023/11/28] (18:53)
5.5 Inspector による検出
5
下部の［Inspector をアクティブ化］をクリックするだけで有効化されます。無料トライアル期間は他
サービスと比べると短く
15 日間となります。有効化後にすぐに初回のスキャンが自動的に実行されます。
スキャンが完了するとダッシュボードに結果が表示されます（図
5.29）。
図 5.29 Inspector のダッシュボード
5.5.2
Inspector
の検出タイプ
Amazon Linux2 でデプロイした EC2 インスタンスに潜む libexpat の脆弱性として、CVE-2022-
22822
【注 38】
をサンプルに Inspector で検出した Findings について説明します。
この脆弱性は
2022 年 1 月 8 日に CVE が採番された libexpat のバージョン 2.4.2 までに潜む脆弱性で
す。
xmlparse.c というファイルに含まれる関数の addBinding の値を改竄することでメモリー破損攻撃
を引き起こすことができます。
リスト
5.17、リスト 5.18、リスト 5.19 は、検出した結果の Findings（ASFF 準拠）のサンプルです。
リスト 5.17 CVE-2022-22822 - expat の Findings（1/3）
{
"SchemaVersion": "2018-10-08",
"Id": "arn:aws:inspector2:ap-northeast-1:123456789012:finding/d2b09c9965f2d6f8d93e2cf503f0c ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.