Analysis of CVE-2019-0708 (BlueKeep)
I held back this write-up until a proof of concept (PoC) was publicly available, as not to cause any harm. Now that there are multiple denial-of-service PoC on github, I’m posting my analysis. Binary Diffing As always, I started with a BinDiff of the binaries modified by the patch (in …
Analysis of a VB Script Heap Overflow (CVE-2019-0666)
Anyone who uses RegEx knows how easy it is to shoot yourself in the foot; but, is it possible to write RegEx so badly that it can lead to RCE? With VB Script, the answer is yes! In this article I’ll be writing about what I assume to be CVE-2019-0666. …
Analyzing a Windows DHCP Server Bug (CVE-2019-0626)
Today I’ll be doing an in-depth write up on CVE-2019-0626, and how to find it. Due to the fact this bug only exists on Windows Server, I’ll be using a Server 2016 VM (corresponding patch is KB4487026). Note: this bug was not found by me, I reverse engineered it from …
MS14-066 In Depth Analysis
A few days ago I published an article detailing how a second bug, in the schannel TLS handshake handling, could allow an attacker to trigger the DecodeSigAndReverse heap overflow in an application that doesn’t support client certificates. I had stated I was not familiar with ECC signatures and was unsure …