userland-exec

Userland Exec Userland exec reemplaza la imagen del proceso existente dentro del espacio de direcciones actual por una nueva. Imita el comportamiento de la llamada al sistema execve, pero las estructuras del proceso que describen la imagen del proceso permanecen sin cambios. En otras palabras, el...

Webmin_Exploit_reverse_shell

ntroduction: The Webmin Exploit is a targeted exploit for the Webmin service, which can be exploited on older versions of Webmin. This exploit uses various techniques to execute malicious code and gain unauthorized access to the target system. It involves: Using both C and Assembly code to execut...

shellcode

shellcode “Una vulnerabilidad proporciona un lenguaje ensamblador para una computadora que nunca ha sido programada antes, y que no fue diseñada pensando en la programabilidad.” -- Halvar Flake Una colección de muestras de shellcode nuevas y antiguas. Artículo...

ulexecve

Inicio Rápido Ejecuta binarios ELF Linux compilados de forma dinámica o estática sin nunca llamar a execve. cat /bin/echo | ulexecve - hello hello Introducción Esta herramienta en Python se llama ulexecve y significa userland execve. Te ayuda a ejecutar binarios ELF arbitrarios en sistemas Linux...

SLAE

SLAE Securitytube Linux Assembly Expert SLAE SLAE-721 Compilación + Assembling ... + Linking ... + Extract Shellcode from binary ... "\x31\xc0\x50\x68\x2f\x2f\x73\x68" "\x68\x2f\x62\x69\x6e\x89\xe3\x89" "\xc1\xb0\x0b\xcd\x80" + Create C-Header file ... + Compile PoC ... + Run PoC ... + Shellcode...

experiments

Experimentos Repositorio de varios experimentos / PoC. debugging-secure-kernel: PoC de depuración con gdb del kernel seguro de Windows 10, sobre QEMU KVM dns: Experimentos relacionados con DNS / Transparencia de certificados / Homoglifos Reducción de superficie de ataque: Desmitificando los...

Linux_X86_Reverse_TCP_Alphanumeric_Staged_Shellcode_Execve-bin-bash

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The vulnerability of the `execve` system call in FreeBSD’s kernel allows a attacker to compromise the confidentiality, integrity, and accessibility of protected information.

The vulnerability of the execve system call in FreeBSD operating systems is related to improper verification of removed users. Exploiting this vulnerability can allow an attacker to compromise the confidentiality, integrity, and accessibility of protected information...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: exec: Force a single empty string when argv is empty Quoting 1 Ariadne Conill: “In several other operating systems, it is a hard requirement that the second argument to execve2 be the name of a program. This prevents scenarios...

Linux Distros Unpatched Vulnerability : CVE-2026-89766

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - pidfd: hold execupdatelock around namespace ioctl The PIDFDGETNAMESPACE ioctls in pidfdioctl perform a filesystem credentials ptrace access check before handing...

DEBIAN-CVE-2026-89766

In the Linux kernel, the following vulnerability has been resolved: pidfd: hold execupdatelock around namespace ioctl The PIDFDGETNAMESPACE ioctls in pidfdioctl perform a filesystem credentials ptrace access check before handing out a namespace file descriptor. The accompanying comment states tha...

CVE-2026-89766

In the Linux kernel, the following vulnerability has been resolved: pidfd: hold execupdatelock around namespace ioctl The PIDFDGETNAMESPACE ioctls in pidfdioctl perform a filesystem credentials ptrace access check before handing out a namespace file descriptor. The accompanying comment states tha...

CVE-2026-89766

This Linux kernel vulnerability affects the PIDFD_GET_*_NAMESPACE ioctls in pidfd_ioctl(), which perform a ptrace credentials check before handing out a namespace file descriptor. Unlike the equivalent procfs paths (proc_ns_get_link, proc_ns_readlink), the pidfd path did not hold the target task'...

CVE-2026-19583 Velociraptor Required Permissions bypass by using client monitoring queries

Velociraptor allows some sensitive artifacts to be gated by additional permissions. For example, the Linux.Sys.BashShell artifact allows arbitrary command execution on endpoints, and so it requires the EXECVE permission to schedule. However, no such check was implemented for client monitoring...

PT-2026-89259

Velociraptor allows some sensitive artifacts to be gated by additional permissions. For example, the Linux.Sys.BashShell artifact allows arbitrary command execution on endpoints, and so it requires the EXECVE permission to schedule. However, no such check was implemented for client monitoring...

SUSE CVE-2026-78408

The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve. Because the kernel checks later cgroup migrations using the credentials from the original open, a program run in an...

CVE-2026-78408

The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve. Because the kernel checks later cgroup migrations using the credentials from the original open, a program run in an...

UBUNTU-CVE-2026-78408

The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve. Because the kernel checks later cgroup migrations using the credentials from the original open, a program run in an...

CVE-2026-78408 Util-linux: util-linux: nsenter --join-cgroup leaks root cgroup migration authority

The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve. Because the kernel checks later cgroup migrations using the credentials from the original open, a program run in an...

EUVD-2026-70105

The nsenter --join-cgroup option opens the target cgroup.procs file as root and leaves that file descriptor open across later namespace and credential changes and across execve. Because the kernel checks later cgroup migrations using the credentials from the original open, a program run in an...