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# CI/CD 管道與基礎建設的分層縱深安全防禦 - 林智偉(Wayne Lin) {%hackmd @DevOpsDay/B1cnefOI0 %} #### 》[議程介紹](https://devopsdays.tw/2024/speaker-page/1491) #### 》[填寫議程滿意度問卷|回饋建言給辛苦的講者](https://forms.gle/RTjMJTAnZ1urLGmS6) > 共筆從這開始 ### CI/CD Pipeline 團隊組合: RD & Infra & Security - Security: 風險怎麼訂。損失的衡量概念。 - 風險衡量概念可以使用人數損失來判斷。 - 當團隊變大時,就會回去思考基礎建設的問題。 ### Governance ![S__4554788](https://hackmd.io/_uploads/r1JnXxpPR.jpg) 1. No Governance 2. Infra Governance - 由 infra 幫忙輔助檢查 3. Strict Governance - 安全團隊審核 No Governance >> Infra >> Strict Governance 為什麼今天要講 Security ? [10 real-world stories of how we’ve compromised CI/CD pipelines](https://research.nccgroup.com/2022/01/13/10-real-world-stories-of-how-weve-compromised-ci-cd-pipelines/) 最容易被攻擊的兩個點:身分驗證、CICD pipline CI/CD pipeline 握有的權限幾乎是機器本身, 破pipeline等於破機器 - infra CI/CD pipeline != App CI/CD pipeline - infra 怕 ransomeware - App software 依賴的套件此時此刻是安全的? ### Attacks - inject script : 在你使用的工具執行碼加入一行指令 - CI/CD bypass : 高權限帳號,例如本機帳號、breaking account,這些帳號的 credential 或 access token 被盜走/竊聽 - 程式依賴的 library 引入時有 typo 導致引入錯誤的惡意 library Reference : - BeyondCorp: (Zero Trust的架構說明paper) / token 使用來源短時間距離變更太遠 - NIST Special Publication: - NIST Cybersecurity Framework(CSF): 2.0 ### Layers source code , pipeline runtime, network ### Before Deep Dive ![S__4554787](https://hackmd.io/_uploads/Bkkqmg6PA.jpg) - 我有安全 VS 我很安全 - 保護誰? - CI/CD 被挾持後,緊急處理方式 - 一定要做演練,真的狀況來七手八腳 - 防禦很重要、偵測更重要 - ### Overall Framework ![Overall Framework](https://hackmd.io/_uploads/HJQLSepvC.png) - 五個項目:identify, **protect**, **detect**, respond, recover (上面好像都講到了) - 兩個層面:Solutions, Capabilities error budget: do overall 我還有 develop time? SRE 提供很重要概念,要有錯誤處裡預算 ### General Recommendations: Authentication & Access 1. Enforce MFA 2. Implement ZeroTrust ### Hardening IaC CI/CD ![S__4554789](https://hackmd.io/_uploads/HkO0rlTv0.jpg) 1. Network: 現在存取的 url,ZTNA ,確認身分才能接上線 (L7 traffic inspection) 2. Source Control: 建議 OAuth/OIDC 去做認證 3. Runtime: 跑在容器。因為它可以建立獨立環境不被干擾。 我可以開resource 但不能存取resource。 4. Pipeline: 把 CI/CD pipeline 獨立出來,也要把環境把跑在容器裡,做到隔離性 5. Internal Dependencies: : 當有人沒有按照 policy 做時,要能夠偵測出來 6. External Dependencies ### Hardening Application CI/CD 很像 Hardening IaC CI/CD ### Open Source More Securely 檢測使用的套件,及其相依套件是否安全 - Co-Found Open SSF - Open Source Insights - dataset [https://deps.dev/](deps.dev) ### SLSA and SBOM 軟體產製過程的控制、 BOM表,製造業把零件一一列表出詳細信息的表叫 BON表。S = software。 ###### tags: `DevOpsDays Taipei 2024` 共筆聊天室: 特別調查安全小組的來賓,嗯,沒人。 有人的地方就是 ~ 江湖 ZeroTrust 去年很紅, 今年好像不紅了

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