Category

Security

The code that wasn’t there: Reading memory on an Android device by accident

The code that wasn’t there: Reading memory on an Android device by accident

CVE-2022-25664, a vulnerability in the Qualcomm Adreno GPU, can be used to leak large amounts of information to a malicious Android application. Learn more about how the vulnerability can be used to leak information in both the user space and kernel space level of pages, and how the GitHub Security Lab used the kernel space information leak to construct a KASLR bypass.

Man Yue Mo
Bypassing OGNL sandboxes for fun and charities

Bypassing OGNL sandboxes for fun and charities

Object Graph Notation Language (OGNL) is a popular, Java-based, expression language used in popular frameworks and applications, such as Apache Struts and Atlassian Confluence. Learn more about bypassing certain OGNL injection protection mechanisms including those used by Struts and Atlassian Confluence, as well as different approaches to analyzing this form of protection so you can harden similar systems.

Alvaro Munoz
Bug bounty graphic

Pwning the all Google phone with a non-Google bug

It turns out that the first “all Google” phone includes a non-Google bug. Learn about the details of CVE-2022-38181, a vulnerability in the Arm Mali GPU. Join me on my journey through reporting the vulnerability to the Android security team, and the exploit that used this vulnerability to gain arbitrary kernel code execution and root on a Pixel 6 from an Android app.

Man Yue Mo