From d526f6b1a6b2d7feacbde363a3866cf33b3cdb1b Mon Sep 17 00:00:00 2001 From: Axell Padilla <68310020+axellpadilla@users.noreply.github.com> Date: Wed, 12 Aug 2026 21:00:50 -0600 Subject: [PATCH 1/2] Add CodeQL SAST and a cargo-fuzz harness Run CodeQL static analysis over every commit and add an isolated cargo-fuzz harness fuzzing the request-path decision surface and policy parsing. A scheduled deep-fuzz job and a light PR regression smoke job exercise the fuzzers; the crate is a standalone workspace so the production dependency tree and binary budget are untouched. Document the scorecard posture in README and STATUS. --- .github/workflows/codeql.yml | 38 + .github/workflows/fuzz.yml | 90 ++ README.md | 29 + STATUS.md | 3 + fuzz/.gitignore | 6 + fuzz/Cargo.lock | 1185 ++++++++++++++++++++++++++ fuzz/Cargo.toml | 34 + fuzz/fuzz_targets/path_normalizer.rs | 70 ++ fuzz/fuzz_targets/policy_parse.rs | 44 + 9 files changed, 1499 insertions(+) create mode 100644 .github/workflows/codeql.yml create mode 100644 .github/workflows/fuzz.yml create mode 100644 fuzz/.gitignore create mode 100644 fuzz/Cargo.lock create mode 100644 fuzz/Cargo.toml create mode 100644 fuzz/fuzz_targets/path_normalizer.rs create mode 100644 fuzz/fuzz_targets/policy_parse.rs 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/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/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""); +}); From 560fcc3c5db0b9473a399f1a1a73a76626eedd03 Mon Sep 17 00:00:00 2001 From: Axell Padilla <68310020+axellpadilla@users.noreply.github.com> Date: Wed, 12 Aug 2026 21:21:56 -0600 Subject: [PATCH 2/2] Fix stale SECURITY.md known gaps and add CONTRIBUTING.md Remove the Known Gaps section's three stale entries (audit, limits, and path normalization are all implemented) and point it at STATUS.md as the current-state home. Add a contributing guide that documents the workflow, required checks, and coding standards, satisfying the OpenSSF Best Practices contribution_requirements criterion. --- CONTRIBUTING.md | 23 +++++++++++++++++++++++ SECURITY.md | 9 ++------- 2 files changed, 25 insertions(+), 7 deletions(-) create mode 100644 CONTRIBUTING.md 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/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.