Core: `SecurityUtils.createMtlsKeyStore` should use a fixed algorithm for creating the `PrivateKey`

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評估

難度
4/5
預估耗時
3-5 天
新手友好度
35/100
Issue 類型
缺陷
描述清晰度
基本清楚
活躍度
停滯
技術堆疊
java
領域
security

研究方向

從 SecurityUtils.createMtlsKeyStore 開始,檢查 issue 中所示的 KeyFactory 呼叫周圍目前對 IllegalArgumentException 的處理。查看 Error Prone 關於 InsecureCipherMode 的指引以及 InvalidAlgorithmParameterException API,然後在啟用 Error Prone 的情況下執行建置。完成的標準是:不安全或不受支援的金鑰演算法依照指定方式處理,且警告已解決。

由索引模型根據 Issue 內容生成。

描述

priority: p3

Callers of SecurityUtils.createMtlsKeyStore can direct the use of insecure algorithms in the construction of the mTLS connection. In general, we attempt to affix the algorithm used to inhibit use of algorithms with known vulnerabilities.

Personally, I would be fine with denying provided certs whose cert.getPublicKey().getAlgorithm() was DH or DSA, but in lieu of blocklisting known bad algorithms, perhaps it'd be more security affirmative to allowlist currently-OK algorithms, so we only ever use good versions, and suffer toil later if we have to retrofit additional entries.

My suggestion is to create a case statement just below where the method currently throws IllegalArgumentException for various cases, and add the set of known good algorithms, and throw an InvalidAlgorithmParameterException if it is not one of those. In addition, special case DH and DSA to give references to their vulnerabilities as described in InsecureCypherMode.identifyDiffieHellmanAndDsaVulnerabilities.

/cc @sophieschmieg, as her guidance/requirements will be canonical for importing whatever changes are made here into the monorepo.

Environment details
  1. API: Core
  2. OS type and version: 5.17.6-1rodete1-amd64
  3. Java version: OpenJDK Runtime Environment (build 11.0.13+8-google-release-451398016) OpenJDK 64-Bit Server VM (build 11.0.13+8-google-release-451398016, mixed mode, sharing)
  4. version(s): ~head (with local patches)
Steps to reproduce
  1. Add errorprone warnings to the build
  2. Build.

SecurityUtils.createMtlsKeyStore will generate an InsecureCipherMode warning.

Code example
    PrivateKey key =
        KeyFactory.getInstance(cert.getPublicKey().getAlgorithm()).generatePrivate(keySpecPKCS8);
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