diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml new file mode 100644 index 0000000..ff5a3ee --- /dev/null +++ b/.github/workflows/codeql.yml @@ -0,0 +1,38 @@ +name: CodeQL + +# Static analysis finds defects independent of any code change, so it runs +# weekly as well as on default-branch pushes and pull requests. +on: + push: + branches: [main] + pull_request: + branches: [main] + schedule: + - cron: '42 3 * * 0' + +# Least privilege by default; jobs opt into more where they need it. +permissions: + contents: read + +jobs: + analyze: + name: Analyze (Rust) + runs-on: ubuntu-latest + # Uploading the SARIF results requires security-events write access. + permissions: + security-events: write + steps: + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 + + - name: Initialize CodeQL + uses: github/codeql-action/init@5595ccaf912efad79be6eef63a5619ff05969be3 # v4.37.6 + with: + languages: rust + + # Autobuild runs `cargo build`; the repo is a single crate with no + # workspace, so no bespoke build step is needed. + - name: Autobuild + uses: github/codeql-action/autobuild@5595ccaf912efad79be6eef63a5619ff05969be3 # v4.37.6 + + - name: Perform CodeQL analysis + uses: github/codeql-action/analyze@5595ccaf912efad79be6eef63a5619ff05969be3 # v4.37.6 diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml new file mode 100644 index 0000000..6fded9e --- /dev/null +++ b/.github/workflows/fuzz.yml @@ -0,0 +1,90 @@ +name: Fuzz + +# Two passes with distinct goals: +# - `smoke` is a fast crash canary for PRs and pushes to main: a small budget +# that surfaces regressions before merge without stalling the pipeline. +# - `deep` is the discovery pass on schedule/manual dispatch, with a longer +# budget so a crash that needs more iterations is still found. +on: + push: + branches: [main] + pull_request: + branches: [main] + schedule: + - cron: '15 3 * * 0' + workflow_dispatch: + +# Least privilege: the jobs only check out source, build, and run locally, +# so read-only contents is enough (no id-token, packages, or attestations). +permissions: + contents: read + +jobs: + smoke: + name: Smoke (${{ matrix.target }}) + # PR/push only: a short canary that should finish in a couple of minutes. + if: github.event_name == 'pull_request' || github.event_name == 'push' + runs-on: ubuntu-latest + strategy: + # Targets are independent; one crashing should not cancel the other. + fail-fast: false + matrix: + target: [path_normalizer, policy_parse] + steps: + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 + with: + persist-credentials: false + + # libfuzzer-sys requires nightly for the -Z sanitizer flags. + - uses: dtolnay/rust-toolchain@4360b52568e2003a75bf9bc1d59f33a8e3fc893c + with: + toolchain: nightly + + # cargo-fuzz is not preinstalled on ubuntu runners. + - name: Install cargo-fuzz + run: cargo install cargo-fuzz --locked + + # Debug profile (-D): the release/ASan build trips a rustc codegen ICE in + # tokio under `-C passes=sancov-module` on current nightly. The debug + # build compiles and links cleanly and exercises the same code paths. + - name: Build fuzz target + run: cargo fuzz build ${{ matrix.target }} -D + + # Small budget: crash canary only, not coverage discovery. + - name: Run fuzz target + run: cargo fuzz run ${{ matrix.target }} -D -- -max_total_time=20 + + deep: + name: Deep (${{ matrix.target }}) + # Schedule/manual only: the longer discovery pass. + if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' + runs-on: ubuntu-latest + strategy: + # Targets are independent; one crashing should not cancel the other. + fail-fast: false + matrix: + target: [path_normalizer, policy_parse] + steps: + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 + with: + persist-credentials: false + + # libfuzzer-sys requires nightly for the -Z sanitizer flags. + - uses: dtolnay/rust-toolchain@4360b52568e2003a75bf9bc1d59f33a8e3fc893c + with: + toolchain: nightly + + # cargo-fuzz is not preinstalled on ubuntu runners. + - name: Install cargo-fuzz + run: cargo install cargo-fuzz --locked + + # Debug profile (-D): the release/ASan build trips a rustc codegen ICE in + # tokio under `-C passes=sancov-module` on current nightly. The debug + # build compiles and links cleanly and exercises the same code paths. + - name: Build fuzz target + run: cargo fuzz build ${{ matrix.target }} -D + + # Longer bounded budget for the discovery pass; a found crash exits + # non-zero and fails the job. + - name: Run fuzz target + run: cargo fuzz run ${{ matrix.target }} -D -- -max_total_time=300 diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 0000000..27fecf9 --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,23 @@ +# Contributing + +Contributions are welcome via GitHub issues and pull requests. + +## Reporting problems + +- Bugs and feature requests: open an [issue](https://github.com/logxel/docker-socket-proxy/issues). +- Security vulnerabilities: do NOT open a public issue — see [`SECURITY.md`](SECURITY.md). + +## Development workflow + +1. Fork the repository and create a branch off `main`. +2. Make a focused, minimal change. +3. Verify it passes the checks enforced in CI: + - `cargo fmt --all --check` + - `cargo clippy --all-targets -- -D warnings` + - `cargo test --all-targets` +4. Add tests for new functionality. +5. Open a pull request. + +Coding standards are documented in [`AGENTS.md`](AGENTS.md) ("Code Quality +Standards"): production code must not use `unwrap()`, `expect()`, or `panic!`, +`unsafe` is forbidden, and new functionality is expected to ship with tests. diff --git a/README.md b/README.md index 980d9d4..cb83c44 100644 --- a/README.md +++ b/README.md @@ -271,6 +271,35 @@ docker-socket-proxy --health-check # exits 0 when healthy, 1 otherwise Conformance targets, adoption decisions, and their measured dependency cost are documented in [`docs/standards.md`](docs/standards.md). The target state is described in [`AGENTS.md`](AGENTS.md). +## Scorecard + +[OpenSSF Scorecard](https://scorecard.dev/viewer/?uri=github.com/logxel/docker-socket-proxy) +grades repository practices rather than code. It runs weekly and on `main` +pushes via [`.github/workflows/scorecard.yml`](.github/workflows/scorecard.yml). + +Code-fixable checks, in place: + +- **SAST** — CodeQL for Rust runs from + [`.github/workflows/codeql.yml`](.github/workflows/codeql.yml) (`language: rust`). +- **Fuzzing** — a cargo-fuzz / libfuzzer-sys harness in [`fuzz/`](fuzz/) targets the + request-path decision surface and policy parsing (`path_normalizer`, + `policy_parse`), exercised by a scheduled job in + [`.github/workflows/fuzz.yml`](.github/workflows/fuzz.yml). + +The remaining checks need repository or account settings, not code: + +- **Code-Review** — a PR review policy that gates merges on approved reviews. +- **Branch-Protection** — branch-protection rules enabled on `main`. +- **Maintained** — time-gated; the repository ages into this one. +- **Contributors** — contributors from more than one organization. +- **Signed-Releases** — a published release; signing is already wired into the + release workflow. +- **CII-Best-Practices** — self-certification at + [bestpractices.dev](https://www.bestpractices.dev). + +The numeric score refreshes only when the scorecard action re-runs — weekly, or +on a `main` push. + ## Contributing Security issues: see [`SECURITY.md`](SECURITY.md). Release history: [`CHANGELOG.md`](CHANGELOG.md). diff --git a/SECURITY.md b/SECURITY.md index 8a9abb9..5b7051f 100644 --- a/SECURITY.md +++ b/SECURITY.md @@ -45,10 +45,5 @@ These are documented properties of the current design, not vulnerabilities. See ## Known Gaps -Tracked openly in [`STATUS.md`](STATUS.md) rather than treated as embargoed -issues, since each is a documented limitation rather than an exploitable -regression: - -- Policy denials produce no audit record -- No request timeout or body-size limit -- Path normalization does not yet implement RFC 3986 §6 +Remaining limitations are tracked in [`STATUS.md`](STATUS.md) rather than +restated here or treated as embargoed issues. diff --git a/STATUS.md b/STATUS.md index a7b1c7d..747adf9 100644 --- a/STATUS.md +++ b/STATUS.md @@ -63,6 +63,9 @@ is otherwise silent. Shipped patterns are checked by test, not warning. asserting the shipped examples still behave as documented, 3 checking policy patterns against the real Docker Engine API surface). +The OpenSSF Scorecard posture — checks addressed and those still outstanding — +is documented in the README's [Scorecard](README.md#scorecard) section. + ## Known Gaps Ordered by the waves in [`docs/standards.md`](docs/standards.md#next-steps). 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/dev/null +++ b/fuzz/Cargo.toml @@ -0,0 +1,34 @@ +[package] +name = "docker-socket-proxy-fuzz" +version = "0.0.0" +edition = "2024" +publish = false +license = "MIT" + +# The root crate declares no `[workspace]`, so this standalone workspace keeps +# the harness out of the root build entirely. The root Cargo.toml and Cargo.lock +# never see it, which is what protects the <130-crate / <8 MB binary budget. +[workspace] +members = ["."] + +[package.metadata] +cargo-fuzz = true + +[dependencies] +libfuzzer-sys = "0.4" +toml = "1" +docker-socket-proxy = { path = ".." } + +[[bin]] +name = "path_normalizer" +path = "fuzz_targets/path_normalizer.rs" +test = false +doc = false +bench = false + +[[bin]] +name = "policy_parse" +path = "fuzz_targets/policy_parse.rs" +test = false +doc = false +bench = false diff --git a/fuzz/fuzz_targets/path_normalizer.rs b/fuzz/fuzz_targets/path_normalizer.rs new file mode 100644 index 0000000..5ff40d4 --- /dev/null +++ b/fuzz/fuzz_targets/path_normalizer.rs @@ -0,0 +1,70 @@ +//! Fuzzes the request-path decision surface: percent-decoding, dot-segment +//! removal, API-version stripping, and pattern matching. This is the primary +//! bypass surface -- a path that normalizes differently from how the matcher +//! sees it could slip past a deny rule, so the whole normalized pipeline is +//! driven here rather than just `check`. + +// The libFuzzer runtime provides `main`; this binary has no entry point of its +// own, only the exported `LLVMFuzzerTestOneInput` shim. +#![no_main] + +use docker_socket_proxy::security::{BodyRule, SecurityFilter}; +use libfuzzer_sys::fuzz_target; + +/// Split `data` at the first NUL byte. A raw fuzz input has no inherent +/// structure; NUL is a delimiter no UTF-8 path can contain, so it never costs +/// coverage the way a printable byte would. +fn split_once(data: &[u8]) -> (Vec, Vec) { + match data.iter().position(|&b| b == 0) { + Some(i) => (data[..i].to_vec(), data[i + 1..].to_vec()), + None => (data.to_vec(), Vec::new()), + } +} + +fuzz_target!(|data: &[u8]| { + let (head, pattern) = split_once(data); + let (method, path) = split_once(&head); + + // Invalid UTF-8 is lossy-mapped rather than made fatal: the normalizer and + // matcher must tolerate arbitrary byte strings without panicking. + let method = String::from_utf8_lossy(&method); + let path = String::from_utf8_lossy(&path); + let pattern = String::from_utf8_lossy(&pattern); + + let mut filter = SecurityFilter::deny_all(); + + // Inject input-derived rules through every public mutator so the decision + // combines allow/deny/exclude surface rather than a fixed profile. + let methods = Some(vec![method.to_string()]); + let endpoints = Some(vec![pattern.to_string()]); + filter + .allow_mut() + .extend(methods.clone(), endpoints.clone()); + filter.deny_mut().push(methods.clone(), endpoints.clone()); + filter + .exclude_mut() + .push(methods.clone(), endpoints.clone()); + + // The raw decision surface (no normalization). + let _ = filter.check(&method, &path); + + // `deny_all()` builds a `None` profile, so `check_head` can only yield + // `BodyRule::None` on success; the body then carries no weight and + // `check_request` must agree. This pins the normalization hand-off. + match filter.check_head(&method, &path) { + Ok(BodyRule::None) => { + assert!( + filter.check_request(&method, &path, b"{}").is_ok(), + "check_request must agree with check_head when no body rule applies" + ); + } + _ => { + let _ = filter.check_request(&method, &path, b"{}"); + } + } + + // Exercise the same rules against the pattern and the normalized path to + // cover exact/prefix/wildcard matching under arbitrary inputs. + let _ = filter.check(&method, &pattern); + let _ = filter.check_request(&method, &pattern, b"{}"); +}); diff --git a/fuzz/fuzz_targets/policy_parse.rs b/fuzz/fuzz_targets/policy_parse.rs new file mode 100644 index 0000000..060b39e --- /dev/null +++ b/fuzz/fuzz_targets/policy_parse.rs @@ -0,0 +1,44 @@ +//! Fuzzes TOML policy parsing and its application through the public mutators. +//! Parse errors are expected fuzz input and are ignored; the surface under test +//! is the merge of a parsed document into a filter and the decisions it yields. + +// The libFuzzer runtime provides `main`; this binary has no entry point of its +// own, only the exported `LLVMFuzzerTestOneInput` shim. +#![no_main] + +use docker_socket_proxy::policy::PolicyDocument; +use docker_socket_proxy::security::SecurityFilter; +use libfuzzer_sys::fuzz_target; + +fuzz_target!(|data: &[u8]| { + // TOML is text, so invalid UTF-8 or malformed documents are ordinary fuzz + // input -- a parse failure, not a crash. The `let-else` early-returns on it. + let Some(document) = std::str::from_utf8(data) + .ok() + .and_then(|text| toml::from_str::(text).ok()) + else { + return; + }; + + let mut filter = SecurityFilter::deny_all(); + + // Mirror PolicyLoader::apply_document, but through the public surface only. + if let Some(set) = document.allow { + filter.allow_mut().extend(set.methods, set.endpoints); + } + if let Some(set) = document.include { + filter.allow_mut().extend(set.methods, set.endpoints); + } + if let Some(set) = document.deny { + filter.deny_mut().push(set.methods, set.endpoints); + } + if let Some(set) = document.exclude { + filter.exclude_mut().push(set.methods, set.endpoints); + } + + // Representative decisions over the merged rules, including a normalized + // version-prefixed path so the pipeline, not just the matcher, runs. + let _ = filter.check("GET", "/info"); + let _ = filter.check("POST", "/containers/create"); + let _ = filter.check_request("GET", "/v1.55/version", b""); +});