onetwoseven-writeup

HTB OneTwoSeven — Full Walkthrough A complete, end-to-end walkthrough of OneTwoSeven , a retired HackTheBox Linux machine. The full chain: deterministic credential generation → symlink escape of an SFTP chroot → vim swap file recovery → SSH port-forwarding to a firewalled admin panel → bypass of...

CVE-2025-32463-Sudo-Chroot-Escape

CVE-2025-32463-Sudo-Chroot-Escape Description This repository contains a Python-based Proof of Concept PoC for CVE-2025-32463, a local privilege escalation vulnerability in the sudo versions 1.9.14 through 1.9.17. When a user has sudo privileges to run a command within a chroot environment -R fla...

CVE-2025-32462-CVE-2025-32463-PoC-Lab

CVE-2025-32462 & CVE-2025-32463 – Advanced PoC Lab This repository provides a container-based lab and detailed PoC for two critical sudo vulnerabilities: CVE-2025-32462 – sudo -h host matching logic bypass CVE-2025-32463 – sudo -R chroot NSS library escape Research & Credit Original research by...

CVE-2025-32463

Reference: https://www.stratascale.com/vulnerability-alert-CVE-2025-32463-sudo-chroot Executing the PoC on Ubuntu 24.04.2 LTS server with Sudo v1.9.15p5, using an unprivileged user with no Sudo rules defined, results in a root shell outside of the chrooted environment. lowpriv@prod:/CVE-2025-3246...

CVE-2025-32463

🚨 PoC: CVE-2025-32463 – Sudo chroot Escape Vulnerability A critical vulnerability affecting sudo versions 1.9.0 to 1.9.17p1 , allowing users to escape from chroot and gain access to the real root filesystem. 📌 Description CVE-2025-32463 is a local privilege escalation vulnerability in sudo that...

CVE-2025-32463_Exploit

CVE-2025-32463Exploit Affected versions 1.9.14 to 1.9.17 bash run.sh Success as follows neko@aosc-neko205 CVE-2025-32463Exploit@main $ bash run.sh + CVE-2025-32463 Sudo chroot 漏洞复现脚本 正在创建临时工作目录... 工作目录已创建: /tmp/sudoexploit.nc0EjT 正在创建 C 语言 payload woot1337.c... 正在设置 chroot 环境和恶意的 nsswitch.conf...

CLSA-2026-1791331076 rsync: Fix of 5 CVEs

CVE-2026-53790: refuse a shell-active RSYNCCONNECTPROG %H host and quote it; escape backtick, newline and carriage return in remote-shell arguments - CVE-2026-53793: confine a "/./" inner-module chroot: secure opens, changedir, chmod, rename, delta-basis opens and alt-dest basis stats, resolved...

CLSA-2026-1788956505 rsync: Fix of 3 CVEs

CVE-2026-53784: daemon module-root chdir escape under use chroot = no because changedir reached the module path with a plain chdir, which followed a planted parent-component symlink and served files from outside the module; the module-root chdir now resolves through an ownership-checked ONOFOLLOW...

openSUSE 16 Security Update : rsync (openSUSE-SU-2026:21650-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21650-1 advisory. - CVE-2026-53783: rrsync restricted-directory escape validation-vs-exec race + unsafe option allowlist bsc1269041. - CVE-2026-53784: Daemon...

OPENSUSE-SU-2026:21650-1 Security update for rsync

This update for rsync fixes the following issues: - CVE-2026-53783: rrsync restricted-directory escape validation-vs-exec race + unsafe option allowlist bsc1269041. - CVE-2026-53784: Daemon module-root chdir escape under "use chroot = no" bsc1269042. - CVE-2026-53785: --relative implied-parent...

SUSE-SU-2026:23323-1 Security update for rsync

This update for rsync fixes the following issues: - CVE-2026-53783: rrsync restricted-directory escape validation-vs-exec race + unsafe option allowlist bsc1269041. - CVE-2026-53784: Daemon module-root chdir escape under "use chroot = no" bsc1269042. - CVE-2026-53785: --relative implied-parent...

SUSE-SU-2026:23253-1 Security update for rsync

This update for rsync fixes the following issues: - CVE-2026-53783: rrsync restricted-directory escape bsc1269041. - CVE-2026-53784: Daemon module-root chdir escape under "use chroot = no" bsc1269042. - CVE-2026-53785: --relative implied-parent creation escapes the destination tree bsc1269043. -...

SUSE SLES15 Security Update : rsync (SUSE-SU-2026:3634-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:3634-1 advisory. - CVE-2026-53783: rrsync restricted-directory escape validation-vs-exec race + unsafe option allowlist bsc1269041. - CVE-2026-53784...

SUSE CVE-2026-53793

rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper...

ALPINE-CVE-2026-53793

rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper...

AZL-95798 CVE-2026-53793 affecting package rsync for versions less than 3.5.0-1

rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper...

CVE-2026-53793 rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode

rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper...

CVE-2026-53793

rsync before 3.5.0 contains a path confinement bypass vulnerability that allows remote clients to escape the intended inner-module root confinement by constructing paths that resolve outside the chroot boundary when the module root contains a /./ boundary marker. Attackers can exploit improper...

Linux Distros Unpatched Vulnerability : CVE-2026-55554

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, the validateLocalUri method enforces chroot boundaries with a strpos prefix check after...

DEBIAN-CVE-2026-55554

Dompdf is an HTML to PDF converter for PHP. In versions 3.15 and prior, the validateLocalUri method enforces chroot boundaries with a strpos prefix check after normalizing paths with realpath . Because normalization strips the trailing directory separator from $chrootPath , the check only...