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Sudo Flaw Lets Linux Users Run Commands As Root Even When They're Restricted

Sudo Flaw Lets Linux Users Run Commands As Root Even When They're Restricted

Oct 14, 2019
Attention Linux Users! A new vulnerability has been discovered in Sudo —one of the most important, powerful, and commonly used utilities that comes as a core command installed on almost every UNIX and Linux-based operating system. The vulnerability in question is a sudo security policy bypass issue that could allow a malicious user or a program to execute arbitrary commands as root on a targeted Linux system even when the "sudoers configuration" explicitly disallows the root access. Sudo, stands for "superuser do," is a system command that allows a user to run applications or commands with the privileges of a different user without switching environments—most often, for running commands as the root user. By default on most Linux distributions, the ALL keyword in RunAs specification in /etc/sudoers file, as shown in the screenshot, allows all users in the admin or sudo groups to run any command as any valid user on the system. However, since privilege separ
Google Hacker Discloses New Linux Kernel Vulnerability and PoC Exploit

Google Hacker Discloses New Linux Kernel Vulnerability and PoC Exploit

Sep 28, 2018
A cybersecurity researcher with Google Project Zero has released the details, and a proof-of-concept (PoC) exploit for a high severity vulnerability that exists in Linux kernel since kernel version 3.16 through 4.18.8. Discovered by white hat hacker Jann Horn, the kernel vulnerability (CVE-2018-17182) is a cache invalidation bug in the Linux memory management subsystem that leads to use-after-free vulnerability, which if exploited, could allow an attacker to gain root privileges on the targeted system. The use-after-free (UAF) vulnerabilities are a class of memory corruption bug that can be exploited by unprivileged users to corrupt or alter data in memory, enabling them to cause a denial of service (system crash) or escalate privileges to gain administrative access on a system. Linux Kernel Exploit Takes an Hour to Gain Root Access However, Horn says his PoC Linux kernel exploit made available to the public "takes about an hour to run before popping a root shell."
Backdoor found in Chinese Tenda Wireless Routers, allows Root access to Hackers

Backdoor found in Chinese Tenda Wireless Routers, allows Root access to Hackers

Oct 19, 2013
Last week Craig Heffner, specialized on the embedded device hacking exposed a serious backdoor in number of D-Link routers allows unauthorized backdoor access. Recently he published his another researcher, Titled ' From China, With Love ', exposed that D-Link is not only the vendor who puts backdoors in their products. According to him, China based networking device and equipment manufacturer - Tenda Technology  (www.tenda.cn) also added potential backdoors into their Wireless Routers. He unpacked the software framework update and locate the httpd binary an found that the manufacturer is using GoAhead server, which has been substantially modified. These routers are protected with standard Wi-Fi Protected Setup (WPS) and WPA encryption key, but still by sending a UDP packet with a special string , an attacker could take over the router. Routers contain a flaw in the httpd component, as the MfgThread() function spawns a backdoor service that listens fo
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SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

May 13, 2024Threat Detection / SoC / SIEM
In the last decade, there has been a growing disconnect between front-line analysts and senior management in IT and Cybersecurity. Well-documented challenges facing modern analysts revolve around a high volume of alerts, false positives, poor visibility of technical environments, and analysts spending too much time on manual tasks. The Impact of Alert Fatigue and False Positives  Analysts are overwhelmed with alerts. The knock-on effect of this is that fatigued analysts are at risk of missing key details in incidents, and often conduct time-consuming triaging tasks manually only to end up copying and pasting a generic closing comment into a false positive alert.  It is likely that there will always be false positives. And many would argue that a false positive is better than a false negative. But for proactive actions to be made, we must move closer to the heart of an incident. That requires diving into how analysts conduct the triage and investigation process. SHQ Response Platfo
Samsung smart TV vulnerability allow attacker to read storage remotely

Samsung smart TV vulnerability allow attacker to read storage remotely

Dec 10, 2012
ReVuln Ltd. , a small security company headed by Donato Ferrante and Luigi Auriemma, post a video that demonstrates that how attacks can gain root on the appliances. Samsung Smart TV contain a vulnerability which allows remote attackers to swipe data from attached storage devices. In this demonstration readers will see how it is possible to use a 0-day vulnerability to retrieve sensitive information, root access, and ultimately monitor and fully control the device remotely. Auriemma said, " We have tested different Samsung televisions of the latest generations running the latest version of their firmware.  Unfortunately we can't disclose additional information but we can only say that almost all the people having a Samsung TV at home or in their offices are affected by this vulnerability. ".
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