linux | Breaking Cybersecurity News | The Hacker News

Weaknesses in e-commerce portals are being exploited to deploy a Linux backdoor as well as a credit card skimmer that's capable of stealing payment information from compromised websites. "The attacker started with automated e-commerce attack probes, testing for dozens of weaknesses in common online store platforms," researchers from Sansec Threat Research  said  in an analysis. "After a day and a half, the attacker found a file upload vulnerability in one of the store's plugins." The name of the affected vendor was not revealed. The initial foothold was then leveraged to upload a malicious web shell and alter the server code to siphon customer data. Additionally, the attacker delivered a Golang-based malware called " linux_avp " that serves as a backdoor to execute commands remotely sent from a command-and-control server hosted in Beijing. Upon execution, the program is designed to remove itself from the disk and camouflage as a " ps -ef

Researchers from Qihoo 360's Netlab security team have released details of a new evolving botnet called " Abcbot " that has been observed in the wild with worm-like propagation features to infect Linux systems and launch distributed denial-of-service (DDoS) attacks against targets. While the earliest version of the botnet dates back to July 2021, new variants observed as recently as October 30 have been equipped with additional updates to strike Linux web servers with weak passwords and are susceptible to N-day vulnerabilities, including a custom implementation of DDoS functionality, indicating that the malware is under continuous development. Netlab's findings also build on a report from Trend Micro early last month, which  publicized  attacks targeting Huawei Cloud with cryptocurrency-mining and cryptojacking malware. The intrusions were also notable for the fact that the malicious shell scripts specifically disabled a process designed to monitor and scan the ser

It comes as no surprise that today's cyber threats are orders of magnitude more complex than those of the past. And the ever-evolving tactics that attackers use demand the adoption of better, more holistic and consolidated ways to meet this non-stop challenge. Security teams constantly look for ways to reduce risk while improving security posture, but many approaches offer piecemeal solutions – zeroing in on one particular element of the evolving threat landscape challenge – missing the forest for the trees.  In the last few years, Exposure Management has become known as a comprehensive way of reigning in the chaos, giving organizations a true fighting chance to reduce risk and improve posture. In this article I'll cover what Exposure Management is, how it stacks up against some alternative approaches and why building an Exposure Management program should be on  your 2024 to-do list. What is Exposure Management?  Exposure Management is the systematic identification, evaluation,

Cybersecurity researchers on Tuesday disclosed 14 critical vulnerabilities in the BusyBox Linux utility that could be exploited to result in a denial-of-service (DoS) condition and, in select cases, even lead to information leaks and remote code execution. The security weaknesses, tracked from CVE-2021-42373 through CVE-2021-42386, affect multiple versions of the tool ranging from 1.16-1.33.1, DevOps company JFrog and industrial cybersecurity company Claroty  said  in a joint report. Dubbed "the Swiss Army Knife of Embedded Linux,"  BusyBox  is a widely used software suite combining a variety of common Unix utilities or applets (e.g.,  cp ,  ls ,  grep ) into a single executable file that can run on Linux systems such as programmable logic controllers (PLCs), human-machine interfaces (HMIs), and remote terminal units (RTUs). A quick list of the flaws and the applets they impact is below — man  - CVE-2021-42373 lzma/unlzma  - CVE-2021-42374 ash  - CVE-2021-42375 hus

Cybersecurity researchers have disclosed a security flaw in the Linux Kernel's Transparent Inter Process Communication ( TIPC ) module that could potentially be leveraged both locally as well as remotely to execute arbitrary code within the kernel and take control of vulnerable machines. Tracked as CVE-2021-43267 (CVSS score: 9.8), the heap overflow vulnerability "can be exploited locally or remotely within a network to gain kernel privileges, and would allow an attacker to compromise the entire system," cybersecurity firm SentinelOne  said  in a report published today and shared with The Hacker News. TIPC is a transport layer  protocol   designed  for nodes running in dynamic cluster environments to reliably communicate with each other in a manner that's more efficient and fault-tolerant than other protocols such as TCP. The vulnerability identified by SentinelOne has to do with insufficient validation of user-supplied sizes for a new message type called "

Google on Monday announced that it will pay security researchers to find exploits using vulnerabilities, previously remediated or otherwise, over the next three months as part of a new bug bounty program to improve the security of the Linux kernel. To that end, the company is expected to issue rewards worth $31,337 (a reference to Leet ) for exploiting privilege escalation in a lab environment for each patched vulnerability, an amount that can climb up to $50,337 for working exploits that take advantage of zero-day flaws in the kernel and other undocumented attack techniques. Specifically, the program aims to uncover attacks that could be launched against Kubernetes-based infrastructure to defeat process isolation barriers (via NSJail) and break out of the sandbox to leak secret information. The program is expected to last until January 31, 2022. "It is important to note, that the easiest exploitation primitives are not available in our lab environment due to the hardening

Winter is Coming for CentOS 8—but here is how you can enjoy your holidays after all. The server environment is complex and if you're managing thousands of Linux servers, the last thing you want is for an operating system vendor to do something completely unexpected. That is exactly what Red Hat, the parent company of the CentOS Project, did when it suddenly announced a  curtailment of support for CentOS 8  – sending thousands of organizations scrambling for an alternative. In this article, we'll review what happened with CentOS 8 and what it means for users who have already upgraded from CentOS release 7 to release 8. We'll also look at your alternatives for replacing CentOS 8. Finally, we'll do a review of your other option: choosing extended support. Extended lifecycle support (ELS) can reduce the pressure to decide on alternative distribution and it may well be the most practical route for many CentOS 8 users. Official support is critical The difficulties arou

Patching really, really matters – patching is what keeps technology solutions from becoming like big blocks of Swiss cheese, with endless security vulnerabilities punching hole after hole into critical solutions. But anyone who's spent any amount of time maintaining systems will know that patching is often easier said than done. Yes, in some instances, you can just run a command line to install that patch, and that's it. These instances are increasingly rare though – given the complexity of the technology environment, you're more likely faced with a complex process to achieve patching best practice. In this article, we'll outline why database patching matters (yes, databases are vulnerable too!), explain what the problem is with patching databases, and point to a novel solution that takes the pain out of database patching. Watch out – your database services are vulnerable too We know that database services are critical – databases underpin IT operations in countle

Windows 10, iOS 15, Google Chrome, Apple Safari, Microsoft Exchange Server, and Ubuntu 20 were successfully broken into using original, never-before-seen exploits at the Tianfu Cup 2021, the fourth edition of the international cybersecurity contest held in the city of Chengdu, China. Targets this year  included  Google Chrome running on Windows 10 21H1, Apple Safari running on Macbook Pro, Adobe PDF Reader, Docker CE, Ubuntu 20/CentOS 8, Microsoft Exchange Server 2019, Windows 10, VMware Workstation, VMware ESXi, Parallels Desktop, iPhone 13 Pro running iOS 15, domestic mobile phones running Android, QEMU VM, Synology DS220j DiskStation, and ASUS RT-AX56U router. The Chinese version of Pwn2Own was  started  in 2018 in the wake of government regulation in the country that barred security researchers from participating in international hacking competitions because of national security concerns. With the exception of Synology DS220j NAS, Xiaomi Mi 11 smartphone, and an unnamed Chine

Cybersecurity researchers have detailed a new campaign that likely targets entities in Southeast Asia with a previously unrecognized Linux malware that's engineered to enable remote access to its operators, in addition to amassing credentials and function as a proxy server. The malware family, dubbed " FontOnLake " by Slovak cybersecurity firm ESET, is said to feature "well-designed modules" that are continuously being upgraded with a broad range of abilities, indicating an active development phase. Samples uploaded to VirusTotal point to the possibility that the very first intrusions utilizing this threat have been happening as early as May 2020. Avast  and  Lacework Labs  are tracking the same malware under the moniker HCRootkit. "The sneaky nature of FontOnLake's tools in combination with advanced design and low prevalence suggest that they are used in targeted attacks," ESET researcher Vladislav Hrčka  said . "To collect data or condu

Sysadmins know what the risks are of running unpatched services. Given the choice, and unlimited resources, most hardworking administrators will ensure that all systems and services are patched consistently. But things are rarely that simple. Technical resources are limited, and patching can often be more complicated than it appears at first glance. Worse, some services are so hidden in the background, that they just don't make it onto the list of things to be patched. QEMU is one of those services that tend to create difficulties with patching. It works away in the background and is easy to take for granted. Plus, patching QEMU involves significant technical and practical challenges – while requiring enormous resources. In this article, we'll address some of the difficulties around patching QEMU, and point to a solution that takes the toughest bits out of QEMU patching. Ignoring QEMU patching is a big risk You'll probably know about it if you're using QEMU – shor

A recently discovered wave of malware attacks has been spotted using a variety of tactics to enslave susceptible machines with easy-to-guess administrative credentials to co-opt them into a network with the goal of illegally mining cryptocurrency. "The malware's primary tactic is to spread by taking advantage of vulnerable systems and weak administrative credentials. Once they've been infected, these systems are then used to mine cryptocurrency," Akamai security researcher Larry Cashdollar  said  in a write-up published last week. The PHP malware — codenamed "Capoae" (short for "Сканирование," the Russian word for "Scanning") — is said to be delivered to the hosts via a backdoored addition to a WordPress plugin called "download-monitor," which gets installed after successfully brute-forcing WordPress admin credentials. The attacks also involve the deployment of a  Golang binary  with decryption functionality, with the obfusc

A number of malicious samples have been created for the Windows Subsystem for Linux (WSL) with the goal of compromising Windows machines, highlighting a sneaky method that allows the operators to stay under the radar and thwart detection by popular anti-malware engines. The "distinct tradecraft" marks the first instance where a threat actor has been found abusing WSL to install subsequent payloads. "These files acted as loaders running a payload that was either embedded within the sample or retrieved from a remote server and was then injected into a running process using Windows API calls," researchers from Lumen Black Lotus Labs  said  in a report published on Thursday. Windows Subsystem for Linux, launched in August 2016, is a  compatibility layer  that's designed to run Linux binary executables (in ELF format) natively on the Windows platform without the overhead of a traditional virtual machine or dual-boot setup. The earliest artifacts date back to M

Researchers on Monday took the wraps off a newly discovered Linux and Windows re-implementation of  Cobalt Strike Beacon  that's actively set its sights on government, telecommunications, information technology, and financial institutions in the wild. The as-yet undetected version of the penetration testing tool — codenamed "Vermilion Strike" — marks one of the  rare Linux ports , which has been traditionally a Windows-based red team tool heavily repurposed by adversaries to mount an array of targeted attacks. Cobalt Strike bills itself as a " threat emulation software ," with Beacon being the payload engineered to model an advanced actor and duplicate their post-exploitation actions. "The stealthy sample uses Cobalt Strike's command-and-control (C2) protocol when communicating to the C2 server and has remote access capabilities such as uploading files, running shell commands and writing to files," Intezer researchers said in a report publishe

The Linux community was caught unprepared when, in December 2020, as part of a change in the way Red Hat supports and develops CentOS, Red Hat suddenly announced that it's cutting the official CentOS 8 support window from ten years – to just two, with support ending Dec 31, 2021. It created a peculiar situation where CentOS 7 users that did the right thing and upgraded quickly to CentOS 8 were left using an OS with just a year's official support remaining – while users of CentOS 7 still get full support until June 30, 2024. Worse, the fact that stable releases of CentOS were discontinued in exchange for the rolling-release CentOS Stream means that to secure their workloads most CentOS 8 users have to opt for an entirely different Linux distribution, with just a year to choose, evaluate and implement an alternative. Red Hat's unexpected decision underlined to what degree software users depend on official support windows for their software security. Countless organization

Close to 14 million Linux-based systems are directly exposed to the Internet, making them a lucrative target for an array of real-world attacks that could result in the deployment of malicious web shells, coin miners, ransomware, and other trojans. That's according to an in-depth look at the Linux threat landscape published by U.S.-Japanese cybersecurity firm Trend Micro , detailing the top threats and vulnerabilities affecting the operating system in the first half of 2021, based on data amassed from honeypots, sensors, and anonymized telemetry. The company, which detected nearly 15 million malware events aimed at Linux-based cloud environments, found coin miners and ransomware to make up 54% of all malware, with web shells accounting for a 29% share. In addition, by dissecting over 50 million events reported from 100,000 unique Linux hosts during the same time period, the researchers found 15 different security weaknesses that are known to be actively exploited in the wild o