By citypw PaX/Grsecurity –> KSPP –> AOSP kernel: Linux kernel mitigation checklist( Sep 18 2017) We should treat security as a whole, just like the combination of PaX/Grsecurity features/code hardening build up a defense-in-depth solution for Linux kernel, which is a core infrastructre we are highly rely on. PaX/Grsecurity is a set of security hardening specific patch that brings the linux kernel security into another level. It’s a great value to make all FLOSS community getting benefit from it.

Author: persmule Mail: [email protected] 00 ME: Management Engine First introduced in Intel’s 965 Express Chipset Family, the Intel Management Engine (ME) is a separate computing environment physically located in the (G)MCH chip (for Core 2 family CPUs which is separate from the northbridge), or PCH chip replacing ICH(for Core i3/i5/i7 which is integrated with northbridge). The ME consists of an individual processor core, code and data caches, a timer, and a secure internal bus to which additional devices are connected, including a cryptography engine, internal ROM and RAM, memory controllers, and a direct memory access (DMA) engine to access the host operating system’s memory as well as to reserve a region of protected external memory to supplement the ME’s limited internal RAM.

Build debug environment for the dynamic linker of Glibc @(Toolchains)[Glibc|dynamic-linker|gdb|gcc] 00 Prologue Recently my work need some research about the dynamic linker of Glibc, when I use gdb from the PLT table of executable or shared library into the Glibc source in a general way will see this: [...] |0xf7ff04b3 mov 0x10(%esp),%edx | >|0xf7ff04b7 mov 0xc(%esp),%eax | |0xf7ff04bb call 0xf7fea080 [...] (gdb) si [...] 0x0804852b in stub@plt () 0x08048500 in ?

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Reproducible builds for PaX/Grsecurity A series of scripts are created to do reproducible builds for Linux kernel with PaX/Grsecurity patch set. Thanks to: PaX/Grsecurity Mempo project Debian GNU/Linux Community Shawn C[a.k.a “Citypw”] Linux From Scratch Without the contributions of the projects, community and people, the scripts cannot be accomplished. The project’s GitHub repo is at https://github.com/hardenedlinux/grsecurity-reproducible-build . Why do reproducible builds? Reproducible builds are important to the binary’s reliability.

By:n3o4po11o Project: STIG-4-Debian ##Why STIG? STIGs is bring by a government agency called The Defense Information System Agency(DISA), which is entity responsible for maintaining the security posture of the Department of Defence(DoD) IT infrastructure. After we heard how the NSA fuck this world from Mr.Sn0wd3n.We will pay more attention about how they do the defense. DoD use this Security Technical Implementation Guides to All DoD IT assets before online/operations.