Fixing Recent Validation Vulnerabilities in OctoRPKI

A number of vulnerabilities in Resource Public Key Infrastructure (RPKI) validation software were disclosed in a recent NCSC advisory, discovered by researchers from the University of Twente. These attacks abuse a set of assumptions that are common across multiple RPKI implementations, and some of these issues were discovered within OctoRPKI. More details about the disclosed vulnerabilities can be found in this RIPE labs article written by one of the researchers. In response, we published a new release of OctoRPKI, v1.4.0, to address and remediate these vulnerabilities.

Cloudflare customers do not have to take any action to protect themselves from these newly discovered vulnerabilities, and no Cloudflare customer data was ever at risk.

We have not seen any attempted exploitation of these vulnerabilities described in the advisory. We use OctoRPKI to perform Border Gateway Protocol (BGP) route validation so that our routers know where to direct IP packets at Layer 3 of the TCP/IP stack. TLS provides additional security at the TCP layer to ensure the integrity and confidentiality of customer data going over the Internet in the event of BGP hijacking.

RPKI and the discovered vulnerabilities

Resource Public Key Infrastructure (RPKI) is a cryptographic method of Continue reading

Deploying security.txt: how Cloudflare’s security team builds on Workers

When the security team at Cloudflare takes on new projects, we approach them with the goal of achieving the “builder first mindset” whereby we design, develop, and deploy solutions just as any standard engineering team would. Additionally, we aim to dogfood our products wherever possible. Cloudflare as a security platform offers a lot of functionality that is vitally important to us, including, but not limited to, our WAF, Workers platform, and Cloudflare Access. We get a lot of value out of using Cloudflare to secure Cloudflare. Not only does this allow us to test the security of our products; it provides us an avenue of direct feedback to help improve the roadmaps for engineering projects.

One specific product that we get a lot of use out of is our serverless platform, Cloudflare Workers. With it, we can have incredible flexibility in the types of applications that we are able to build and deploy to our edge. An added bonus here is that our team does not have to manage a single server that our code runs on.

Today, we’re launching support for the security.txt initiative through Workers to help give security researchers a common location to learn about how Continue reading