Archive for the ‘Linux Vulnerability’ Category

Warning! Unprivileged Linux Users With UID > INT_MAX Can Execute Any Command

December 6th, 2018
Hold tight, this may blow your mind… A low-privileged user account on most Linux operating systems with UID value anything greater than 2147483647 can execute any systemctl command unauthorizedly—thanks to a newly discovered vulnerability. The reported vulnerability actually resides in PolicyKit (also known as polkit)—an application-level toolkit for Unix-like operating systems that defines

Posted in Debian, linux, Linux Vulnerability, privilege escalation, Red Hat, Ubuntu, user privilege, Vulnerability | Comments (0)

New Privilege Escalation Flaw Affects Most Linux Distributions

October 26th, 2018
An Indian security researcher has discovered a highly critical flaw in X.Org Server package that impacts OpenBSD and most Linux distributions, including Debian, Ubuntu, CentOS, Red Hat, and Fedora. Xorg X server is a popular open-source implementation of the X11 system (display server) that offers a graphical environment to a wider range of hardware and OS platforms. It serves as an

Posted in CentOS, Debian, Fedora, Linux distribution, Linux server, Linux Vulnerability, OpenBSD, privilege escalation, Red Hat, Ubuntu | Comments (0)

A Decade Old Unix/Linux/BSD Root Privilege-Escalation Bug Discovered

June 20th, 2017

Security researchers have discovered more than a decade-old vulnerability in several Unix-based operating systems — including Linux, OpenBSD, NetBSD, FreeBSD and Solaris — which can be exploited by attackers to escalate their privileges to root, potentially leading to a full system takeover.

Dubbed Stack Clash, the vulnerability (CVE-2017-1000364) has been discovered in the way memory was

Posted in freebsd, hacking news, Linux exploit, Linux Vulnerability, local root exploit, OpenBSD, privilege escalation, root exploit, solaris os, Vulnerability | Comments (0)

A Decade Old Unix/Linux/BSD Root Privilege-Escalation Bug Discovered

June 20th, 2017

Security researchers have discovered more than a decade-old vulnerability in several Unix-based operating systems — including Linux, OpenBSD, NetBSD, FreeBSD and Solaris — which can be exploited by attackers to escalate their privileges to root, potentially leading to a full system takeover.

Dubbed Stack Clash, the vulnerability (CVE-2017-1000364) has been discovered in the way memory was

Posted in freebsd, hacking news, Linux exploit, Linux Vulnerability, local root exploit, OpenBSD, privilege escalation, root exploit, solaris os, Vulnerability | Comments (0)

A Decade Old Unix/Linux/BSD Root Privilege-Escalation Bug Discovered

June 20th, 2017

Update: Find working Exploits and Proof-of-Concepts at the bottom of this article.

Security researchers have discovered more than a decade-old vulnerability in several Unix-based operating systems — including Linux, OpenBSD, NetBSD, FreeBSD and Solaris — which can be exploited by attackers to escalate their privileges to root, potentially leading to a full system takeover.

Dubbed Stack Clash

Posted in freebsd, hacking news, Linux exploit, Linux Vulnerability, local root exploit, OpenBSD, privilege escalation, root exploit, solaris os, Vulnerability | Comments (0)

Linux Kernel Gets Patch For Years-Old Serious Vulnerability

March 16th, 2017

Another dangerous vulnerability has been discovered in Linux kernel that dates back to 2009 and affects a large number of Linux distros, including Red Hat, Debian, Fedora, OpenSUSE, and Ubuntu.

The latest Linux kernel flaw (CVE-2017-2636), which existed in the Linux kernel for the past seven years, allows a local unprivileged user to gain root privileges on affected systems or cause a denial

Posted in Buffer Overflow, double free vulnerability, how to hack linux, Linux hacking, Linux kernel, Linux kernel exploit, Linux Vulnerability, memory corruption vulnerability, Vulnerability | Comments (0)

5-Year-Old Linux Kernel Local Privilege Escalation Flaw Discovered

December 7th, 2016

A 5-year-old serious privilege-escalation vulnerability has been discovered in Linux kernel that affects almost every distro of the Linux operating system, including Redhat, and Ubuntu.

Over a month back, a nine-year-old privilege-escalation vulnerability, dubbed “Dirty COW,” was discovered in the Linux kernel that affected every distro of the open-source operating system, including Red Hat,

Posted in Denial of Service, hacking news, how to hack linux, Linux hacking, Linux kernel, Linux kernel exploit, linux security, Linux Vulnerability, server hacking, Vulnerability | Comments (0)

This Hack Gives Linux Root Shell Just By Pressing ‘ENTER’ for 70 Seconds

November 16th, 2016

A hacker with little more than a minute can bypass the authentication procedures on some Linux systems just by holding down the Enter key for around 70 seconds.

The result? The act grants the hacker a shell with root privileges, which allows them to gain complete remote control over encrypted Linux machine.

The security issue relies due to a vulnerability (CVE-2016-4484) in the

Posted in Debian linux, Denial of Service, elevation of privilege, hacking news, information disclosure, Linux exploit, Linux hacking, Linux Unified Key Setup, Linux Vulnerability | Comments (0)

Bug in OpenSSH Opens Linux Machines to Password Cracking Attack

July 23rd, 2015

A simple but highly critical vulnerability recently disclosed in the most widely used OpenSSH software allows attackers to try thousands of password login attempts per connection in a short period.

OpenSSH is the most popular software widely used for secure remote access to Linux-based systems. Generally, the software allows 3 to 6 Password login attempts before closing a connection, but a

Posted in brute force attack, dictionary attack, hack ssh password, hacking news, linux security, Linux Vulnerability, OpenSSH, password hacking, SSH password cracking, ssh security, Vulnerability | Comments (0)