CVE-2018-4416-exploit

Preface :PROPERTIES: :CUSTOMID: preface :END: OKay, binary security is not only /heap/ and /stack/, we still have a lot to discover despite regular CTF challenge. Browser, Virtual Machine, and Kernel all play an important role in binary security. And I decide to study browser first. I choose a...

cgPwn

cgPwn - Cyber Grand Pwnage Box This is a Ubuntu VM tailored for hardware hacking, RE and Wargaming. Tools included Pwndbg Pwntools Binwalk Radare2 Capstone, Unicorn and Keystone Engines Qira Timeless Debugger AFL Valgrind , VGdb ROPGadget, XRop, Ropper, rp++ Intel PIN Angr z3 frida Compiler tools...

Penetration-Test

Penetration-Test Full penetration test report against IP Ubuntu VM. Attack chain: directory enumeration → backup file discovery → password cracking → CMS file upload → reverse shell → kernel privilege escalation Dirty Pipe, CVE-2022-0847. Repository Structure /report – Final penetration test repo...

ubuntu-privesc-lab

ubuntu-privesc-lab Full penetration testing workflow: credential brute force, SSH access and privilege escalation CVE-2021-4034 OVERVIEW This project demonstrates a full penetration testing workflow against a vulnerable Ubuntu virtual machine. The attack chain includes reconnaissance, credential...

Ubuntu 18.04.2 VMs can fail to boot on Citrix Hypervisor (formerly XenServer)

When creating an Ubuntu 18.04.2 or18.04.3VM or updating an existing VM to Ubuntu 18.04.2 or 18.04.3, your VM can fail to boot. The console shows the boot sequence hung at the point "Starting Tool to automatically collect and submit kernel crash signatures..." If you switch the console to shell mo...

Linux - Broken uid/gid Mapping for Nested User Namespaces

commit 6397fac4915a "userns: bump idmap limits to 340" increases the number of possible uid/gid mappings that a namespace can have from 5 to 340. This is implemented by switching to a different data structure if the number of mappings exceeds 5: Instead of linear search over an unsorted array of...

CVE-2008-5103

The 1 python-vm-builder and 2 ubuntu-vm-builder implementations in VMBuilder 0.9 in Ubuntu 8.10 omit the -e option when invoking chpasswd with a root:! argument, which configures the root account with a cleartext password of ! exclamation point and allows attackers to bypass intended login...

CVE-2008-5103

The 1 python-vm-builder and 2 ubuntu-vm-builder implementations in VMBuilder 0.9 in Ubuntu 8.10 omit the -e option when invoking chpasswd with a root:! argument, which configures the root account with a cleartext password of ! exclamation point and allows attackers to bypass intended login...