Embedded Multicore Building Blocks (EMB²)

Projects that follow the best practices below can voluntarily self-certify and show that they've achieved an Open Source Security Foundation (OpenSSF) best practices badge.

If this is your project, please show your badge status on your project page! The badge status looks like this: Badge level for project 654 is passing Here is how to embed it:

These are the Passing level criteria. You can also view the Silver or Gold level criteria.

        

 Basics 13/13 ●

  • Identification

    C/C++ library for parallel programming of embedded systems

    What programming language(s) are used to implement the project?

  • Basic project website content


    Enough for a badge!

    The project website MUST succinctly describe what the software does (what problem does it solve?). [description_good]

    Besides a description of the key features and a simple example for using the library, the website also provides background information and lists frequently asked questions.


    Enough for a badge!

    The project website MUST provide information on how to: obtain, provide feedback (as bug reports or enhancements), and contribute to the software. [interact]

    The website contains general information about how to contact the community: https://embb.io/keep_in_touch.html. Additional information can be found in https://github.com/siemens/embb/blob/master/README.md and https://github.com/siemens/embb/blob/master/CONTRIBUTING.md.


    Enough for a badge!

    The information on how to contribute MUST explain the contribution process (e.g., are pull requests used?) (URL required) [contribution]

    Detailed information on the contribution process is given in https://github.com/siemens/embb/blob/master/CONTRIBUTING.md.


    Enough for a badge!

    The information on how to contribute SHOULD include the requirements for acceptable contributions (e.g., a reference to any required coding standard). (URL required) [contribution_requirements]

    Besides process-related information, https://github.com/siemens/embb/blob/master/CONTRIBUTING.md describes the coding guidelines (incl. tool support such as cpplint and cppcheck) as well as guidelines for documenting the code.


  • FLOSS license

    What license(s) is the project released under?


    Enough for a badge!

    The software produced by the project MUST be released as FLOSS. [floss_license]

    The BSD licenses (2-clause and 3-clause) meet the above requirements (see also https://github.com/siemens/embb/blob/master/COPYING.md). The BSD-2-Clause license is approved by the Open Source Initiative (OSI).


    Enough for a badge!

    It is SUGGESTED that any required license(s) for the software produced by the project be approved by the Open Source Initiative (OSI). [floss_license_osi]

    Both, BSD 2-clause and 3-clause are approved by OSI (https://opensource.org/licenses/alphabetical). The BSD-2-Clause license is approved by the Open Source Initiative (OSI).


    Enough for a badge!

    The project MUST post the license(s) of its results in a standard location in their source repository. (URL required) [license_location]

    The license file COPYING.md is contained in the root folder of the project: https://github.com/siemens/embb/blob/master/COPYING.md.


  • Documentation


    Enough for a badge!

    The project MUST provide basic documentation for the software produced by the project. [documentation_basics]

    Installation instructions are given in https://github.com/siemens/embb/blob/master/README.md. The release files contain a tutorial explaining the basics (including examples).


    Enough for a badge!

    The project MUST provide reference documentation that describes the external interface (both input and output) of the software produced by the project. [documentation_interface]

    The reference manual, which is part of the release files, describes the APIs (Doxygen documentation).


  • Other


    Enough for a badge!

    The project sites (website, repository, and download URLs) MUST support HTTPS using TLS. [sites_https]

    All URLs use HTTPS.


    Enough for a badge!

    The project MUST have one or more mechanisms for discussion (including proposed changes and issues) that are searchable, allow messages and topics to be addressed by URL, enable new people to participate in some of the discussions, and do not require client-side installation of proprietary software. [discussion]

    GitHub supports discussions on issues and pull requests.


    Enough for a badge!

    The project SHOULD provide documentation in English and be able to accept bug reports and comments about code in English. [english]

    All documentation as well as GitHub issues are in English.


    Enough for a badge!

    The project MUST be maintained. [maintained]


(Advanced) What other users have additional rights to edit this badge entry? Currently: []



  • Public version-controlled source repository


    Enough for a badge!

    The project MUST have a version-controlled source repository that is publicly readable and has a URL. [repo_public]

    Repository on GitHub, which provides public Git repositories with URLs.


    Enough for a badge!

    The project's source repository MUST track what changes were made, who made the changes, and when the changes were made. [repo_track]

    Repository on GitHub, which uses git. git can track the changes, who made them, and when they were made.


    Enough for a badge!

    To enable collaborative review, the project's source repository MUST include interim versions for review between releases; it MUST NOT include only final releases. [repo_interim]

    All changes, bug fixes, new features, etc. are published on GitHub (in separate branches) for review.


    Enough for a badge!

    It is SUGGESTED that common distributed version control software be used (e.g., git) for the project's source repository. [repo_distributed]

    Repository on GitHub, which uses git. git is distributed.


  • Unique version numbering


    Enough for a badge!

    The project results MUST have a unique version identifier for each release intended to be used by users. [version_unique]

    See https://github.com/siemens/embb/releases.


    Enough for a badge!

    It is SUGGESTED that the Semantic Versioning (SemVer) or Calendar Versioning (CalVer) version numbering format be used for releases. It is SUGGESTED that those who use CalVer include a micro level value. [version_semver]

    Enough for a badge!

    It is SUGGESTED that projects identify each release within their version control system. For example, it is SUGGESTED that those using git identify each release using git tags. [version_tags]

    For each version, there is a corresponding Git tag.


  • Release notes


    Enough for a badge!

    The project MUST provide, in each release, release notes that are a human-readable summary of major changes in that release to help users determine if they should upgrade and what the upgrade impact will be. The release notes MUST NOT be the raw output of a version control log (e.g., the "git log" command results are not release notes). Projects whose results are not intended for reuse in multiple locations (such as the software for a single website or service) AND employ continuous delivery MAY select "N/A". (URL required) [release_notes]

    Release notes are contained in https://github.com/siemens/embb/blob/master/CHANGELOG.md.


    Enough for a badge!

    The release notes MUST identify every publicly known run-time vulnerability fixed in this release that already had a CVE assignment or similar when the release was created. This criterion may be marked as not applicable (N/A) if users typically cannot practically update the software themselves (e.g., as is often true for kernel updates). This criterion applies only to the project results, not to its dependencies. If there are no release notes or there have been no publicly known vulnerabilities, choose N/A. [release_notes_vulns]

    For each release, CHANGELOG.md contains a section on known bugs.


  • Bug-reporting process


    Enough for a badge!

    The project MUST provide a process for users to submit bug reports (e.g., using an issue tracker or a mailing list). (URL required) [report_process]

    Bug reports can be submitted via GitHub (https://github.com/siemens/embb/issues) using the 'bug' label.


    Enough for a badge!

    The project SHOULD use an issue tracker for tracking individual issues. [report_tracker]

    Issues are tracked using GitHub: https://github.com/siemens/embb/issues


    Enough for a badge!

    The project MUST acknowledge a majority of bug reports submitted in the last 2-12 months (inclusive); the response need not include a fix. [report_responses]

    The majority of bugs is fixed with high priority (see, for example, https://github.com/siemens/embb/issues?q=label%3Abug).


    Enough for a badge!

    The project SHOULD respond to a majority (>50%) of enhancement requests in the last 2-12 months (inclusive). [enhancement_responses]

    We try to address enhancements as soon as possible (see, for example, https://github.com/siemens/embb/issues?q=label%3Aenhancement).


    Enough for a badge!

    The project MUST have a publicly available archive for reports and responses for later searching. (URL required) [report_archive]

    GitHub's issue tracker allows to search for open and already closed issues: https://github.com/siemens/embb/issues


  • Vulnerability report process


    Enough for a badge!

    The project MUST publish the process for reporting vulnerabilities on the project site. (URL required) [vulnerability_report_process]

    See section "Contributing" in https://github.com/siemens/embb/blob/master/CONTRIBUTING.md or the FAQ (https://embb.io/faq.html).


    Enough for a badge!

    If private vulnerability reports are supported, the project MUST include how to send the information in a way that is kept private. (URL required) [vulnerability_report_private]

    Private vulnerability reports can be sent via mail to embb.info@gmail.com (see also https://github.com/siemens/embb/blob/master/CONTRIBUTING.md or https://embb.io/faq.html).


    Enough for a badge!

    The project's initial response time for any vulnerability report received in the last 6 months MUST be less than or equal to 14 days. [vulnerability_report_response]

    No vulnerability reports received so far.


  • Working build system


    Enough for a badge!

    If the software produced by the project requires building for use, the project MUST provide a working build system that can automatically rebuild the software from source code. [build]

    The central make file is https://github.com/siemens/embb/blob/master/CMakeLists.txt.


    Enough for a badge!

    It is SUGGESTED that common tools be used for building the software. [build_common_tools]

    EMB² is built using CMake, which is commonly used on a variety of platforms.


    Enough for a badge!

    The project SHOULD be buildable using only FLOSS tools. [build_floss_tools]

    As described in https://github.com/siemens/embb/blob/master/README.md, CMake and GCC are sufficient to build the project.


  • Automated test suite


    Enough for a badge!

    The project MUST use at least one automated test suite that is publicly released as FLOSS (this test suite may be maintained as a separate FLOSS project). The project MUST clearly show or document how to run the test suite(s) (e.g., via a continuous integration (CI) script or via documentation in files such as BUILD.md, README.md, or CONTRIBUTING.md). [test]

    The unit tests and scripts shipped with the project have the same license (BSD 2-clause).


    Enough for a badge!

    A test suite SHOULD be invocable in a standard way for that language. [test_invocation]

    After building the project, the test suite can be started by typing 'binaries/run_tests.sh' (or 'binaries\run_tests.bat' on Windows).


    Enough for a badge!

    It is SUGGESTED that the test suite cover most (or ideally all) the code branches, input fields, and functionality. [test_most]

    At the time of this writing, statement coverage is 91%.


    Enough for a badge!

    It is SUGGESTED that the project implement continuous integration (where new or changed code is frequently integrated into a central code repository and automated tests are run on the result). [test_continuous_integration]

    Jenkins is used to build the project at every push. Additionally, Jenkins also runs tests and various tools for static/dynamic analysis on a nightly basis.


  • New functionality testing


    Enough for a badge!

    The project MUST have a general policy (formal or not) that as major new functionality is added to the software produced by the project, tests of that functionality should be added to an automated test suite. [test_policy]

    See https://github.com/siemens/embb/blob/master/CONTRIBUTING.md


    Enough for a badge!

    The project MUST have evidence that the test_policy for adding tests has been adhered to in the most recent major changes to the software produced by the project. [tests_are_added]

    Tests are part of code reviews which are carried out before new functionality is merged into the development branch. Moreover, test coverage is regularly tracked via CI.


    Enough for a badge!

    It is SUGGESTED that this policy on adding tests (see test_policy) be documented in the instructions for change proposals. [tests_documented_added]

    See section "Contributing" in https://github.com/siemens/embb/blob/master/CONTRIBUTING.md.


  • Warning flags


    Enough for a badge!

    The project MUST enable one or more compiler warning flags, a "safe" language mode, or use a separate "linter" tool to look for code quality errors or common simple mistakes, if there is at least one FLOSS tool that can implement this criterion in the selected language. [warnings]

    The default warning flag is '-Wall'. Additionally, we employ cpplint and cppcheck to detect code quality errors.


    Enough for a badge!

    The project MUST address warnings. [warnings_fixed]

    To enforce our zero warnings policy, nightly builds are executed such that warnings are treated as errors. Hence, release builds are guaranteed to be warning-free for the supported compiler versions.


    Enough for a badge!

    It is SUGGESTED that projects be maximally strict with warnings in the software produced by the project, where practical. [warnings_strict]

    See above.


  • Secure development knowledge


    Enough for a badge!

    The project MUST have at least one primary developer who knows how to design secure software. (See ‘details’ for the exact requirements.) [know_secure_design]

    Enough for a badge!

    At least one of the project's primary developers MUST know of common kinds of errors that lead to vulnerabilities in this kind of software, as well as at least one method to counter or mitigate each of them. [know_common_errors]

  • Use basic good cryptographic practices

    Note that some software does not need to use cryptographic mechanisms. If your project produces software that (1) includes, activates, or enables encryption functionality, and (2) might be released from the United States (US) to outside the US or to a non-US-citizen, you may be legally required to take a few extra steps. Typically this just involves sending an email. For more information, see the encryption section of Understanding Open Source Technology & US Export Controls.

    Enough for a badge!

    The software produced by the project MUST use, by default, only cryptographic protocols and algorithms that are publicly published and reviewed by experts (if cryptographic protocols and algorithms are used). [crypto_published]

    Enough for a badge!

    If the software produced by the project is an application or library, and its primary purpose is not to implement cryptography, then it SHOULD only call on software specifically designed to implement cryptographic functions; it SHOULD NOT re-implement its own. [crypto_call]

    Enough for a badge!

    All functionality in the software produced by the project that depends on cryptography MUST be implementable using FLOSS. [crypto_floss]

    Enough for a badge!

    The security mechanisms within the software produced by the project MUST use default keylengths that at least meet the NIST minimum requirements through the year 2030 (as stated in 2012). It MUST be possible to configure the software so that smaller keylengths are completely disabled. [crypto_keylength]

    Enough for a badge!

    The default security mechanisms within the software produced by the project MUST NOT depend on broken cryptographic algorithms (e.g., MD4, MD5, single DES, RC4, Dual_EC_DRBG), or use cipher modes that are inappropriate to the context, unless they are necessary to implement an interoperable protocol (where the protocol implemented is the most recent version of that standard broadly supported by the network ecosystem, that ecosystem requires the use of such an algorithm or mode, and that ecosystem does not offer any more secure alternative). The documentation MUST describe any relevant security risks and any known mitigations if these broken algorithms or modes are necessary for an interoperable protocol. [crypto_working]

    Enough for a badge!

    The default security mechanisms within the software produced by the project SHOULD NOT depend on cryptographic algorithms or modes with known serious weaknesses (e.g., the SHA-1 cryptographic hash algorithm or the CBC mode in SSH). [crypto_weaknesses]

    Enough for a badge!

    The security mechanisms within the software produced by the project SHOULD implement perfect forward secrecy for key agreement protocols so a session key derived from a set of long-term keys cannot be compromised if one of the long-term keys is compromised in the future. [crypto_pfs]

    Enough for a badge!

    If the software produced by the project causes the storing of passwords for authentication of external users, the passwords MUST be stored as iterated hashes with a per-user salt by using a key stretching (iterated) algorithm (e.g., Argon2id, Bcrypt, Scrypt, or PBKDF2). See also OWASP Password Storage Cheat Sheet. [crypto_password_storage]

    Enough for a badge!

    The security mechanisms within the software produced by the project MUST generate all cryptographic keys and nonces using a cryptographically secure random number generator, and MUST NOT do so using generators that are cryptographically insecure. [crypto_random]

  • Secured delivery against man-in-the-middle (MITM) attacks


    Enough for a badge!

    The project MUST use a delivery mechanism that counters MITM attacks. Using https or ssh+scp is acceptable. [delivery_mitm]

    GitHub uses https for downloading release files: https://github.com/siemens/embb/releases


    Enough for a badge!

    A cryptographic hash (e.g., a sha1sum) MUST NOT be retrieved over http and used without checking for a cryptographic signature. [delivery_unsigned]

    Vacuously true since no hashes are transferred.


  • Publicly known vulnerabilities fixed


    Enough for a badge!

    There MUST be no unpatched vulnerabilities of medium or higher severity that have been publicly known for more than 60 days. [vulnerabilities_fixed_60_days]

    No vulnerabilities known, bugs are fixed with high priority.


    Enough for a badge!

    Projects SHOULD fix all critical vulnerabilities rapidly after they are reported. [vulnerabilities_critical_fixed]

    No vulnerabilities known, bugs are fixed with high priority.


  • Other security issues


    Enough for a badge!

    The public repositories MUST NOT leak a valid private credential (e.g., a working password or private key) that is intended to limit public access. [no_leaked_credentials]

    The repository does not contain any credentials.


  • Static code analysis


    Enough for a badge!

    At least one static code analysis tool (beyond compiler warnings and "safe" language modes) MUST be applied to any proposed major production release of the software before its release, if there is at least one FLOSS tool that implements this criterion in the selected language. [static_analysis]

    We use Coverity Scan (https://scan.coverity.com/projects/siemens-embb) and cppcheck (see below) for static analysis.


    Enough for a badge!

    It is SUGGESTED that at least one of the static analysis tools used for the static_analysis criterion include rules or approaches to look for common vulnerabilities in the analyzed language or environment. [static_analysis_common_vulnerabilities]

    Enough for a badge!

    All medium and higher severity exploitable vulnerabilities discovered with static code analysis MUST be fixed in a timely way after they are confirmed. [static_analysis_fixed]

    Enough for a badge!

    It is SUGGESTED that static source code analysis occur on every commit or at least daily. [static_analysis_often]

    cppcheck is run by our internal CI server (Jenkins) on every commit and breaks the build in case of any warnings. Additionally, we regularly run Coverity Scan (https://scan.coverity.com/projects/siemens-embb).


  • Dynamic code analysis


    Enough for a badge!

    It is SUGGESTED that at least one dynamic analysis tool be applied to any proposed major production release of the software before its release. [dynamic_analysis]

    We use Helgrind to detect concurrency issues such as data races and a linearizability checker to verify the data structures provided by the library.


    Enough for a badge!

    It is SUGGESTED that if the software produced by the project includes software written using a memory-unsafe language (e.g., C or C++), then at least one dynamic tool (e.g., a fuzzer or web application scanner) be routinely used in combination with a mechanism to detect memory safety problems such as buffer overwrites. If the project does not produce software written in a memory-unsafe language, choose "not applicable" (N/A). [dynamic_analysis_unsafe]

    Since version 0.5.0 we run Microsoft's AppVerifier before major releases, e.g. to detect memory safety problems.


    Enough for a badge!

    It is SUGGESTED that the project use a configuration for at least some dynamic analysis (such as testing or fuzzing) which enables many assertions. In many cases these assertions should not be enabled in production builds. [dynamic_analysis_enable_assertions]

    Invariants and assumptions are checked using assertions. Values that depend on the environment (e.g., user input) are always checked, not only in debug mode as in case of assertions.


    Enough for a badge!

    All medium and higher severity exploitable vulnerabilities discovered with dynamic code analysis MUST be fixed in a timely way after they are confirmed. [dynamic_analysis_fixed]

    So far, we didn't encounter any severe vulnerabilities, but generally fix bugs in a timely way.



This data is available under the Creative Commons Attribution version 3.0 or later license (CC-BY-3.0+). All are free to share and adapt the data, but must give appropriate credit. Please credit Tobias Schuele and the OpenSSF Best Practices badge contributors.

Project badge entry owned by: Tobias Schuele.
Entry created on 2017-02-03 11:57:58 UTC, last updated on 2017-05-16 14:43:45 UTC. Last achieved passing badge on 2017-02-22 21:20:19 UTC.

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