adjust-cvss

Takes a SARIF file and a list of query id patterns as input and assigns custom cvss scores (aka security-severity) to those queries. This allows to make specific queries less or more severe, which affects how they are displayed (Low, High, Critical, ...) and whether they cause pull request checks to fail.

Example

The following example sets the cvss score of all queries to 1.2 except for the query with the id java/xss. Note that this only affects queries with a security-severity metadata field. Therefore, most code quality related queries are not affected:

name: "CodeQL"

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  analyze:
    name: Analyze
    runs-on: ubuntu-latest
    permissions:
      actions: read
      contents: read
      security-events: write

    strategy:
      fail-fast: false
      matrix:
        language: [ 'java' ]

    steps:
    - name: Checkout repository
      uses: actions/checkout@v2

    - name: Initialize CodeQL
      uses: github/codeql-action/init@v1
      with:
        languages: ${{ matrix.language }}
        queries: security-and-quality

    - run: |
        javatest/build

    - name: Perform CodeQL Analysis
      uses: github/codeql-action/analyze@v1
      with:
        output: sarif-results
        upload: False

    - name: adjust-cvss
      uses: advanced-security/adjust-cvss@master
      with:
        patterns: |
          **:1.2
          java/xss:9.9
        input: sarif-results/${{ matrix.language }}.sarif
        output: sarif-results/${{ matrix.language }}.sarif

    - name: Upload SARIF
      uses: github/codeql-action/upload-sarif@v1
      with:
        sarif_file: sarif-results/${{ matrix.language }}.sarif

Note how we provided upload: False and output: sarif-results to the analyze action. That way we can filter the SARIF with the adjust-cvss action before uploading it via upload-sarif.

Patterns

Each pattern line is of the form:

<id pattern>:<score pattern>

for example:

**:1.2                           # all queries shall have a cvss of `1.2`.
java/xss:9.9                     # the Java XSS query should have a score of `9.9`
java/**:5.4                      # all Java queries have a score of `5.4`