Whitepaper – Double Fetch Vulnerabilities in C and C++

Double fetch vulnerabilities in C and C++ have been known about for a number of years. However, they can appear in multiple forms and can have varying outcomes. As much of this information is spread across various sources, this whitepaper draws the knowledge together into a single place, in order to better describe the different … Continue reading Whitepaper – Double Fetch Vulnerabilities in C and C++

Shaking The Foundation of An Online Collaboration Tool: Microsoft 365 Top 5 Attacks vs the CIS Microsoft 365 Foundation Benchmark

As one of the proud contributors to the Center for Internet Security (CIS) Microsoft 365 Foundation Benchmark, I wanted to raise awareness about the new version release by the Center for Internet Security (CIS) released on February 17th, and how it can help a company to have a secure baseline for their Microsoft 365 tenant. … Continue reading Shaking The Foundation of An Online Collaboration Tool: Microsoft 365 Top 5 Attacks vs the CIS Microsoft 365 Foundation Benchmark

10 real-world stories of how we’ve compromised CI/CD pipelines

by Aaron Haymore, Iain Smart, Viktor Gazdag, Divya Natesan, and Jennifer Fernick Mainstream appreciation for cyberattacks targeting continuous integration and continuous delivery/continuous deployment (CI/CD) pipelines has been gaining momentum. Attackers and defenders increasingly understand that build pipelines are highly-privileged targets with a substantial attack surface. But what are the potential weak points in a CI/CD … Continue reading 10 real-world stories of how we’ve compromised CI/CD pipelines

Technical Advisory – Arbitrary Signature Forgery in Stark Bank ECDSA Libraries (CVE-2021-43572, CVE-2021-43570, CVE-2021-43569, CVE-2021-43568, CVE-2021-43571)

Vendor: Stark Bank's open-source ECDSA cryptography libraries Vendor URL: https://starkbank.com/, https://github.com/starkbank/ Versions affected: - ecdsa-python (https://github.com/starkbank/ecdsa-python) v2.0.0 - ecdsa-java (https://github.com/starkbank/ecdsa-java) v1.0.0 - ecdsa-dotnet (https://github.com/starkbank/ecdsa-dotnet) v1.3.1 - ecdsa-elixir (https://github.com/starkbank/ecdsa-elixir) v1.0.0 - ecdsa-node (https://github.com/starkbank/ecdsa-node) v1.1.2 Author: Paul Bottinelli paul.bottinelli@nccgroup.com Advisory URLs: - ecdsa-python: https://github.com/starkbank/ecdsa-python/releases/tag/v2.0.1 - ecdsa-java: https://github.com/starkbank/ecdsa-java/releases/tag/v1.0.1 - ecdsa-dotnet: https://github.com/starkbank/ecdsa-dotnet/releases/tag/v1.3.2 - ecdsa-elixir: https://github.com/starkbank/ecdsa-elixir/releases/tag/v1.0.1 - ecdsa-node: https://github.com/starkbank/ecdsa-node/releases/tag/v1.1.3 CVE … Continue reading Technical Advisory – Arbitrary Signature Forgery in Stark Bank ECDSA Libraries (CVE-2021-43572, CVE-2021-43570, CVE-2021-43569, CVE-2021-43568, CVE-2021-43571)

Tool Release – Reliably-checked String Library Binding

by Robert C. Seacord Memory Safety Reliably-checked Strings is a library binding I created that uses static array extents to improve diagnostics that can help identify memory safety flaws. This is part of broader initiative in the C Standards Committee to improve bounds checking for array types. See my blog post Improving Software Security through … Continue reading Tool Release – Reliably-checked String Library Binding

Supply Chain Security Begins with Secure Software Development

by Robert C. Seacord Component-based Software Development Supply chain security is a complex problem that needs to be solved to before we can gain confidence in the quality of the software systems we depend upon. In July 2001, Addison-Wesley Professional  published the Building Systems from Commercial Components book I coauthored with Kurt Wallnau and Scott Hissam. Building software … Continue reading Supply Chain Security Begins with Secure Software Development

The Future of C Code Review

I gave a short talk on the Future of C Code Review at our internal (Not) NCC Con Conference this year (held virtually due to Covid-19) and recorded it for posterity.In this short talk, I focus on optimizations resulting from pointer provenance-based alias analysis that can modify the behavior of code with undefined behaviors. https://www.youtube.com/watch?v=kX1sjaqorWcContinue reading The Future of C Code Review

Investigating Potential Security Vulnerability Manifestation through Various Analyses & Inferences Regarding Internet RFCs (and how RFC Security might be Improved)

Overview RFCs have played a pivotal role in helping to formalise ideas and requirements for much of the Internet's design and engineering. They have facilitated peer review amongst engineers, researchers and computer scientists, which in turn has resulted in specification of key Internet protocols and their behaviours so that developers can implement those protocols in … Continue reading Investigating Potential Security Vulnerability Manifestation through Various Analyses & Inferences Regarding Internet RFCs (and how RFC Security might be Improved)

Conference Talks – February/March 2021

Throughout February and March, members of NCC Group will be presenting their work at the following conferences: Jennifer Fernick (NCC Group), Rao Lakkakula (JPMorgan Chase), Christopher Robinson (Red Hat), & Kay Williams (Microsoft), "Frontiers in Securing the Open Source Ecosystem," to be presented at FOSS Backstage (Virtual - February 10-12 2021)Robert Seacord (NCC Group) & … Continue reading Conference Talks – February/March 2021