Fetching Vendor Data at Scale with Serverless

I’ve been using the Serverless Framework for a while now to rapidly develop and provision Lambda functions, as well as other dependent AWS resources — it makes a developer’s life much easier. While you can certainly work with serverless functions outside of the Serverless Framework, it offers some major benefits that streamline deployment, including a …

A Closer Look at Recent HTTP/2 Vulnerabilities Affecting K8s and Other Implementations

A couple of weeks ago, Netflix disclosed a number of resource exhaustion vulnerabilities (identified by Jonathan Looney) present in many third party HTTP/2 implementations. Notably, this directly affected h2 endpoints in Kubernetes (GoLang libraries net/http, x/net/http2) as well as other projects like nginx. Yes, it even has a logo. Though DoS weaknesses usually aren’t particularly …

Compromising OpenDrive’s Cloud Storage Accounts – Or How Not to Design Session Management

While recently comparing cloud storage solutions, I was surprised to learn there are still companies offering unlimited storage plans. OpenDrive is one such company — not to be confused with the OpenDRIVE format specification — offering unlimited options for personal, business, and enterprise customers. In addition to traditional cloud storage, they also offer backup and content …

Persistent XSS in PNC’s Secure Email System

PNC is a large financial services company with operations in both consumer and corporate sectors, predominantly located in the eastern and central United States. While making some account changes with them a few months ago, I had to exchange numerous sensitive documents with various employees within the organization. While most of the process was pretty …

Bright City: A Highly Insecure Police and Municipal Government App

Earlier this year I received a Nextdoor message from my County Police Department announcing a “Property LockBox App” they’d released (purchased) for citizens. There was no previous communication regarding this app that I could find, so I was interested in learning more about it. As the app description states, Bright City is “[a] 2-way, dedicated mobile application for cities …

XSS over SMS: Hacking Text Messages in Verizon Messages

Verizon Messages (Message+) is a group of software clients available for mobile, desktop, and web aimed at enhancing/unifying the VZW text messaging experience across multiple devices. While it has a few additional features outside of SMS, I was most interested in activating it for its web app client when at a desktop/laptop. After I installed the Android app and …