Security

Aimed at developers, in this series we introduce and explore the memory unsafe attack surface of interpreted languages.

Keep dependencies up to date, to make sure you can quickly apply a patch when it really matters – when there’s a critical security vulnerability.

GitHub dependency insights helps both developers and security teams manage their open source security with confidence—automatically compiling relevant CVE information, aiding in OSS license compliance, and helping them better understand their OSS dependency versions.

In this post I’ll show how input validation which should be used to prevent malformed inputs to enter our applications, open up the doors to Remote Code Execution (RCE).

One year ago, the security research team at Semmle launched its first Capture the Flag (CTF), as part of the Hack In The Box (HITB) Amsterdam conference. We wanted to…

This post details how an open source supply chain malware spread through build artifacts. 26 open source projects were backdoored by this malware and were actively serving backdoored code.

Saying thanks is now a core part of the Security Advisory workflow.

We examine the dangers of network integer arithmetic based on a case study of security vulnerabilities reported to the ntop project.

Join our Capture the Flag challenge to use your CodeQL skills or learn new ones.

In this post I’ll show how garbage collections (GC) in Chrome may be triggered with small memory allocations in unexpected places, which was then used to cause a use-after-free bug.

A phishing campaign targeting our customers lures GitHub users into providing their credentials (including two-factor authentication codes). Learn more about the threat and what you can do to protect yourself.

Learn more about the Bug Bounty program, including a recap of 2019’s bugs, our expanded scope, new features, and more.

This is the fourth and final post in a series about Ubuntu’s crash reporting system. We’ll review CVE-2019-11484, a vulnerability in whoopsie which enables a local attacker to get a shell as the whoopsie user, thereby gaining the ability to read any crash report.

This is the third post in a series about Ubuntu’s crash reporting system. We’ll review CVE-2019-15790, a vulnerability in apport that enables a local attacker to obtain the ASLR offsets for any process they can start (or restart).

This is the second post in our series about Ubuntu’s crash reporting system. We’ll review CVE-2019-7307, a TOCTOU vulnerability that enables a local attacker to include the contents of any file on the system in a crash report.