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bug: slsa-verifier failing to validate google cloud generated provenance #700

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godofredoc opened this issue Aug 26, 2023 · 8 comments
Open

bug: slsa-verifier failing to validate google cloud generated provenance #700

godofredoc opened this issue Aug 26, 2023 · 8 comments
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area:gcb Issue with the gcb verifier type:bug Something isn't working

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@godofredoc
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Error:

FAILED: SLSA verification failed: verified intoto provenance does not match text provenance: diff '  gcb.v01IntotoStatement{
  	StatementHeader: {Type: "https://in-toto.io/Statement/v0.1", PredicateType: "https://slsa.dev/provenance/v0.1", Subject: {{Name: "https://us-docker.pkg.dev/flutter-dashboard/appengine/default.ve"..., Digest: {"sha256": "0121a28df93df7e14e7fea450ba905b980d1efc80089263588142893610aa84d"}}, {Name: "https://us-docker.pkg.dev/flutter-dashboard/appengine/default.ve"..., Digest: {"sha256": "0121a28df93df7e14e7fea450ba905b980d1efc80089263588142893610aa84d"}}}},
  	Predicate: gcb.ProvenancePredicate{
  		Builder: {ID: "https://cloudbuild.googleapis.com/GoogleHostedWorker@v0.3"},
  		Recipe: gcb.ProvenanceRecipe{
  			Type:       "https://cloudbuild.googleapis.com/CloudBuildYaml@v0.1",
  			EntryPoint: "app_dart/cloudbuild_app_dart.yaml",
  			Arguments: map[string]any{
  				... // 2 identical entries
  				"name":             string("projects/308150028417/locations/global/builds/085019aa-9481-4d8b"...),
  				"options":          map[string]any{"dynamicSubstitutions": bool(true), "logging": string("LEGACY"), "pool": map[string]any{}, "requestedVerifyOption": string("VERIFIED"), ...},
- 				"sourceProvenance": map[string]any{},
+ 				"sourceProvenance": map[string]any{
+ 					"resolvedGitSource": map[string]any{
+ 						"revision": string("b1de41509493276b0ed9890ec20a537b6f2c09b0"),
+ 						"url":      string("https://github.com/flutter/cocoon.git"),
+ 					},
+ 				},

The issue is that provenance generated with gcloud artifacts docker images describe $DOCKER_IMAGE_URL --show-provenance --format json > $OUTPUT_DIRECTORY has an empty sourceProvenance in the plain text part of the file:

"sourceProvenance": map[string]any{},

But the base64 payload contains the full sourceprovenance:

+ 				"sourceProvenance": map[string]any{
+ 					"resolvedGitSource": map[string]any{
+ 						"revision": string("b1de41509493276b0ed9890ec20a537b6f2c09b0"),
+ 						"url":      string("https://github.com/flutter/cocoon.git"),
+ 					},
+ 				},
@godofredoc godofredoc changed the title slsa-verifier failing to validate google cloud generated provenance bug: slsa-verifier failing to validate google cloud generated provenance Aug 26, 2023
@godofredoc
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\cc @drewroengoogle

@ianlewis ianlewis added type:bug Something isn't working area:gcb Issue with the gcb verifier labels Aug 28, 2023
@drewroengoogle drewroengoogle mentioned this issue Aug 28, 2023
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@drewroengoogle
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drewroengoogle commented Aug 28, 2023 •
edited

In regards to impact, this is preventing us from doing any deployments of our Flutter infra applications. Is there a workaround or flag we can set to ignore the sourceProvenance change? The above provenance is automatically generated by Cloud Build, and we are using slsa-verifier 2.3.0, although from trying to verify the provenance locally, it seems to also be happening in 2.4.0.

@laurentsimon
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Thanks for the report. Please revert to the older slsa-verifier version (2.3.0). Can you attach (or copy) the result of your gcloud artifacts docker images describe in the issue?

We added some preliminary code to verify GCB v1.0 in v2.4.0, but not fully tested and not officially released. We're missing the e2e tests. I'll work on these right away and cut a new version

@drewroengoogle
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Yes, here's the provenance of one of an artifact that failed validation today:

{
  "image_summary": {
    "digest": "sha256:7c8a71a843ee128ff4baadab3a05076d07ffb8d47d8affc759a87a60b1d9153c",
    "fully_qualified_digest": "us-docker.pkg.dev/flutter-dashboard/appengine/default.version-27ecaf6@sha256:7c8a71a843ee128ff4baadab3a05076d07ffb8d47d8affc759a87a60b1d9153c",
    "registry": "us-docker.pkg.dev",
    "repository": "appengine"
  },
  "provenance_summary": {
    "provenance": [
      {
        "build": {
          "intotoStatement": {
            "_type": "https://in-toto.io/Statement/v0.1",
            "predicateType": "https://slsa.dev/provenance/v0.1",
            "slsaProvenance": {
              "builder": {
                "id": "https://cloudbuild.googleapis.com/GoogleHostedWorker@v0.3"
              },
              "materials": [
                {
                  "digest": {
                    "sha1": "27ecaf67be8ec7f8571b75553715bc05f3a7022c"
                  },
                  "uri": "git+https://github.com/flutter/cocoon"
                }
              ],
              "metadata": {
                "buildFinishedOn": "2023-08-28T17:28:17.432966Z",
                "buildInvocationId": "22237782-5a12-46fd-a753-1fc36ca79818",
                "buildStartedOn": "2023-08-28T17:23:47.928930449Z"
              },
              "recipe": {
                "arguments": {
                  "@type": "type.googleapis.com/google.devtools.cloudbuild.v1.Build",
                  "id": "22237782-5a12-46fd-a753-1fc36ca79818",
                  "name": "projects/308150028417/locations/global/builds/22237782-5a12-46fd-a753-1fc36ca79818",
                  "options": {
                    "dynamicSubstitutions": true,
                    "logging": "LEGACY",
                    "pool": {},
                    "requestedVerifyOption": "VERIFIED",
                    "substitutionOption": "ALLOW_LOOSE"
                  },
                  "sourceProvenance": {},
                  "steps": [
                    {
                      "args": [
                        "cloud_build/dashboard_build.sh"
                      ],
                      "entrypoint": "/bin/bash",
                      "name": "us-docker.pkg.dev/flutter-dashboard/flutter/flutter",
                      "pullTiming": {
                        "endTime": "2023-08-28T17:24:27.360161386Z",
                        "startTime": "2023-08-28T17:23:51.511735054Z"
                      },
                      "status": "SUCCESS",
                      "timing": {
                        "endTime": "2023-08-28T17:27:06.448156408Z",
                        "startTime": "2023-08-28T17:23:51.511735054Z"
                      }
                    },
                    {
                      "args": [
                        "build",
                        "-t",
                        "us-docker.pkg.dev/flutter-dashboard/appengine/default.version-27ecaf6",
                        "app_dart"
                      ],
                      "name": "us-docker.pkg.dev/cloud-builders/ga/v1/docker",
                      "pullTiming": {
                        "endTime": "2023-08-28T17:27:22.507876044Z",
                        "startTime": "2023-08-28T17:27:06.448243160Z"
                      },
                      "status": "SUCCESS",
                      "timing": {
                        "endTime": "2023-08-28T17:27:56.241362235Z",
                        "startTime": "2023-08-28T17:27:06.448243160Z"
                      }
                    },
                    {
                      "args": [
                        "-c",
                        "gcloud builds submit \\\n  --config app_dart/cloudbuild_app_dart_deploy.yaml \\\n  --substitutions=\"SHORT_SHA=27ecaf6\" \\\n  --async"
                      ],
                      "entrypoint": "/bin/bash",
                      "name": "gcr.io/cloud-builders/gcloud",
                      "pullTiming": {
                        "endTime": "2023-08-28T17:27:56.244231571Z",
                        "startTime": "2023-08-28T17:27:56.241498675Z"
                      },
                      "status": "SUCCESS",
                      "timing": {
                        "endTime": "2023-08-28T17:28:07.789365002Z",
                        "startTime": "2023-08-28T17:27:56.241498675Z"
                      }
                    }
                  ],
                  "substitutions": {
                    "BRANCH_NAME": "main",
                    "COMMIT_SHA": "27ecaf67be8ec7f8571b75553715bc05f3a7022c",
                    "REF_NAME": "main",
                    "REPO_FULL_NAME": "flutter/cocoon",
                    "REPO_NAME": "cocoon",
                    "REVISION_ID": "27ecaf67be8ec7f8571b75553715bc05f3a7022c",
                    "SHORT_SHA": "27ecaf6",
                    "TRIGGER_BUILD_CONFIG_PATH": "app_dart/cloudbuild_app_dart.yaml",
                    "TRIGGER_NAME": "cocoon-app-dart"
                  }
                },
                "entryPoint": "app_dart/cloudbuild_app_dart.yaml",
                "type": "https://cloudbuild.googleapis.com/CloudBuildYaml@v0.1"
              }
            },
            "subject": [
              {
                "digest": {
                  "sha256": "7c8a71a843ee128ff4baadab3a05076d07ffb8d47d8affc759a87a60b1d9153c"
                },
                "name": "https://us-docker.pkg.dev/flutter-dashboard/appengine/default.version-27ecaf6"
              },
              {
                "digest": {
                  "sha256": "7c8a71a843ee128ff4baadab3a05076d07ffb8d47d8affc759a87a60b1d9153c"
                },
                "name": "https://us-docker.pkg.dev/flutter-dashboard/appengine/default.version-27ecaf6:latest"
              }
            ]
          }
        },
        "createTime": "2023-08-28T17:28:18.356251Z",
        "envelope": {
          "payload": "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",
          "payloadType": "application/vnd.in-toto+json",
          "signatures": [
            {
              "keyid": "projects/verified-builder/locations/global/keyRings/attestor/cryptoKeys/provenanceSigner/cryptoKeyVersions/1",
              "sig": "MEUCIQCnJrSetTPwk4zcHzEZZnLFEw7W_eylt0q4oYtYdAPZ6gIgU9yRbp2LVJdgdUCctjZQ9sI6KWtePKR1874znbJm7Lc="
            },
            {
              "keyid": "projects/verified-builder/locations/global/keyRings/attestor/cryptoKeys/builtByGCB/cryptoKeyVersions/1",
              "sig": "MEQCICj83i8WH-DCqMBcuqriymqii0bt1Ecwtz62hjgRNyA6AiBoIG8cC0ixb0Ro6Ge-yhBUWx7qHWslyGhw4I6S4xVfUw=="
            }
          ]
        },
        "kind": "BUILD",
        "name": "projects/flutter-dashboard/occurrences/7d301c29-20b0-465a-8c95-f81c7e8de751",
        "noteName": "projects/verified-builder/notes/intoto_22237782-5a12-46fd-a753-1fc36ca79818",
        "resourceUri": "https://us-docker.pkg.dev/flutter-dashboard/appengine/default.version-27ecaf6@sha256:7c8a71a843ee128ff4baadab3a05076d07ffb8d47d8affc759a87a60b1d9153c",
        "updateTime": "2023-08-28T17:28:18.356251Z"
      }
    ]
  }
}

@laurentsimon
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Thanks. Taking a look.

@laurentsimon
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laurentsimon commented Aug 28, 2023 •
edited

@godofredoc is correct. The text provenance and the payload's provenance don't match. Patching the text provenance with:

"sourceProvenance": {
          "resolvedGitSource": {
            "revision": "27ecaf67be8ec7f8571b75553715bc05f3a7022c",
            "url": "https://github.com/flutter/cocoon.git"
          }
        },

makes the verification pass. Let's create a bug on GCB side to ask why this inconsistency is happening.

@laurentsimon
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Here's a patch you can use temporarily (it assumes there's a single v0.1 provenance, which may soon change with v1.0 release at Cloud Next):

gcloud artifacts docker images describe $DOCKER_IMAGE_URL --show-provenance --format json > tmp.json
val=$(cat tmp.json | jq -r '.provenance_summary.provenance[0].envelope.payload' | base64 -d | jq '.predicate.recipe.arguments.sourceProvenance')
cat tmp.json | jq ".provenance_summary.provenance[0].build.intotoStatement.slsaProvenance.recipe.arguments.sourceProvenance = ${val}" > provenance.json
slsa-verifier ... --provenance-path provenance.json ...

@godofredoc
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Thank you @laurentsimon for the workaround. I'll implement it in the flutter workflow to unblock the validation.

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@ianlewis @godofredoc @laurentsimon @drewroengoogle