Tuesday, August 11, 2026
LIVEThe Unrelenting Cyber Battle: Hacking Threats and the Imperative of Robust Data Protection///Navigating the Cyber Labyrinth: Bolstering Defenses Against Evolving Hacking Threats///The Dual Front War: Battling Hacking and Bolstering Data Protection in the Digital Age///The Ever-Evolving Cyber Threat Landscape: Navigating Hacking and Fortifying Data Protection///The Unseen Battle: Fortifying Data in an Age of Relentless Hacking///The Unseen War: Hacking's Relentless Advance and the Imperative of Data Protection///The Evolving Threat Landscape: Hacking, Data Protection, and the Imperative for Proactive Security///Navigating the Digital Minefield: Bolstering Data Protection in an Era of Relentless Hacking///The Dual Fronts of Digital Defense: Combating Hacking and Fortifying Data Protection///Hacking's New Frontier: Fortifying Data Protection in the Age of Advanced Cyber Threats///The Dual Front: Navigating Hacking Threats and Fortifying Data Protection in the Digital Age///Navigating the Digital Gauntlet: The Evolving Nexus of Hacking and Data Protection///The Unrelenting Cyber Battle: Hacking Threats and the Imperative of Robust Data Protection///Navigating the Cyber Labyrinth: Bolstering Defenses Against Evolving Hacking Threats///The Dual Front War: Battling Hacking and Bolstering Data Protection in the Digital Age///The Ever-Evolving Cyber Threat Landscape: Navigating Hacking and Fortifying Data Protection///The Unseen Battle: Fortifying Data in an Age of Relentless Hacking///The Unseen War: Hacking's Relentless Advance and the Imperative of Data Protection///The Evolving Threat Landscape: Hacking, Data Protection, and the Imperative for Proactive Security///Navigating the Digital Minefield: Bolstering Data Protection in an Era of Relentless Hacking///The Dual Fronts of Digital Defense: Combating Hacking and Fortifying Data Protection///Hacking's New Frontier: Fortifying Data Protection in the Age of Advanced Cyber Threats///The Dual Front: Navigating Hacking Threats and Fortifying Data Protection in the Digital Age///Navigating the Digital Gauntlet: The Evolving Nexus of Hacking and Data Protection///
Subscribe
Cyber Security
Independent · Digital
Thehackingpost
RSSSubscribe
CybersecurityAI-assisted

PoC Released for Sudo chroot Flaw Allowing Local Privilege Escalation

## Cybersecurity Update: Sudo Vulnerability

DBy Danielle FrostOct 14, 20251 min read

Cybersecurity Update: Sudo Vulnerability

A proof-of-concept (PoC) exploit has been released for a critical vulnerability in the widely used sudo utility. This flaw allows local users to escape a chroot jail and execute commands with root privileges.

The vulnerability is due to sudo 's handling of directory paths when invoked with a modified root directory (chroot). By crafting a specific path, attackers can exit the chroot jail, accessing the full filesystem and gaining a root shell.

The exploit requires only basic user privileges, making it easy for insiders or compromised accounts to elevate their privileges.

Security researchers have published a concise PoC script demonstrating the bug. By invoking sudo --chroot with a nested directory name containing escape sequences, the attacker can gain root shell access:

sudo --chroot=a ../../../../../../bin/bash -p

A proof-of-concept (PoC) exploit has been released for a critical vulnerability in the widely used sudo utility.
Danielle Frost · Thehackingpost

This script allows any user in vulnerable environments to obtain root access, bypassing chroot restrictions. The exploit risks the confidentiality, integrity, and availability of systems by enabling attackers to install backdoors, modify binaries, or exfiltrate data.

To mitigate this risk, organizations should upgrade sudo to fixed versions and monitor configurations to disable unnecessary chroot operations.

CVE ID Affected Versions Impact CVSS 3.1 Score

CVE-2021-3156 sudo < 1.9.5p1 (Debian, Ubuntu); sudo < 1.8.31p2 (Fedora, CentOS) Local privilege escalation 7.8

Advertisement

Summary of Vulnerability

Systems with older sudo releases are vulnerable until updated. Upgrading to sudo 1.9.5p1 or later resolves this issue. System administrators should confirm their sudo version and apply necessary updates promptly. Disabling chroot features where unnecessary can further reduce exposure to similar vulnerabilities.

Regular auditing of sudo policies and user privileges is crucial for maintaining system security.

Based on reporting by GBHackers.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
Related Stories
Cybersecurity

Why Fintech Banking Platforms Are Reducing Operational Costs by 40%

Paige Monroe · Mar 26, 2026
Cybersecurity

Dogecoin Price Prediction: SHIB Burns 172M Tokens as Pepeto Exchange Earns From Every Trade

Eric Wallace · Mar 26, 2026
Cybersecurity

Solana Price Prediction: SOL Holds $86 With Commodity Status as Pepeto Targets Bigger Returns

Zachary Burns · Mar 26, 2026
Cybersecurity

Open Directory Malware Campaign Uses Obfuscated VBS, PNG Loaders and RAT Payloads

Joseph Cain · Mar 26, 2026