linux | Breaking Cybersecurity News | The Hacker News

Cybersecurity researchers have demonstrated a proof-of-concept (PoC) rootkit dubbed Curing that leverages a Linux asynchronous I/O mechanism called io_uring to bypass traditional system call monitoring. This causes a "major blind spot in Linux runtime security tools," ARMO said. "This mechanism allows a user application to perform various actions without using system calls," the company said in a report shared with The Hacker News. "As a result, security tools relying on system call monitoring are blind' to rootkits working solely on io_uring." io_uring, first introduced in Linux kernel version 5.1 in March 2019, is a Linux kernel system call interface that employs two circular buffers called a submission queue (SQ) and a completion queue (CQ) between the kernel and an application (i.e., user space) to track the submission and completion of I/O requests in an asynchronous manner. The rootkit devised by ARMO facilitates communication between ...

The problem is simple: all breaches start with initial access, and initial access comes down to two primary attack vectors – credentials and devices. This is not news; every report you can find on the threat landscape depicts the same picture.  The solution is more complex. For this article, we'll focus on the device threat vector. The risk they pose is significant, which is why device management tools like Mobile Device Management (MDM) and Endpoint Detection and Response (EDR) are essential components of an organization's security infrastructure. However, relying solely on these tools to manage device risk actually creates a false sense of security. Instead of the blunt tools of device management, organizations are looking for solutions that deliver device trust . Device trust provides a comprehensive, risk-based approach to device security enforcement, closing the large gaps left behind by traditional device management solutions. Here are 5 of those limitations and how to ov...

The problem is simple: all breaches start with initial access, and initial access comes down to two primary attack vectors – credentials and devices. This is not news; every report you can find on the threat landscape depicts the same picture.  The solution is more complex. For this article, we'll focus on the device threat vector. The risk they pose is significant, which is why device management tools like Mobile Device Management (MDM) and Endpoint Detection and Response (EDR) are essential components of an organization's security infrastructure. However, relying solely on these tools to manage device risk actually creates a false sense of security. Instead of the blunt tools of device management, organizations are looking for solutions that deliver device trust . Device trust provides a comprehensive, risk-based approach to device security enforcement, closing the large gaps left behind by traditional device management solutions. Here are 5 of those limitations and how to ov...

Cybersecurity researchers have uncovered three malicious packages in the npm registry that masquerade as a popular Telegram bot library but harbor SSH backdoors and data exfiltration capabilities. The packages in question are listed below - node-telegram-utils (132 downloads) node-telegram-bots-api (82 downloads) node-telegram-util (73 downloads) According to supply chain security firm Socket, the packages are designed to mimic node-telegram-bot-api , a popular Node.js Telegram Bot API with over 100,000 weekly downloads. The three libraries are still available for download. "While that number may sound modest, it only takes a single compromised environment to pave the way for wide-scale infiltration or unauthorized data access," security researcher Kush Pandya said . "Supply chain security incidents repeatedly show that even a handful of installs can have catastrophic repercussions, especially when attackers gain direct access to developer systems or produc...

Cybersecurity researchers are warning of continued risks posed by a distributed denial-of-service (DDoS) malware known as XorDDoS , with 71.3 percent of the attacks between November 2023 and February 2025 targeting the United States. "From 2020 to 2023, the XorDDoS trojan has increased significantly in prevalence," Cisco Talos researcher Joey Chen said in a Thursday analysis.  "This trend is not only due to the widespread global distribution of the XorDDoS trojan but also an uptick in malicious DNS requests linked to its command-and-control (C2) infrastructure. In addition to targeting commonly exposed Linux machines, the trojan has expanded its reach to Docker servers, converting infected hosts into bots." Nearly 42 percent of the compromised devices are located in the United States, followed by Japan, Canada, Denmark, Italy, Morocco, and China. XorDDoS is a well-known malware that has a track record of striking Linux systems for over a decade. In May 2022...

Cybersecurity researchers have unearthed a new controller component associated with a known backdoor called BPFDoor as part of cyber attacks targeting telecommunications, finance, and retail sectors in South Korea, Hong Kong, Myanmar, Malaysia, and Egypt in 2024. "The controller could open a reverse shell," Trend Micro researcher Fernando Mercês said in a technical report published earlier in the week. "This could allow lateral movement, enabling attackers to enter deeper into compromised networks, allowing them to control more systems or gain access to sensitive data. The campaign has been attributed with medium confidence to a threat group it tracks as Earth Bluecrow, which is also known as DecisiveArchitect, Red Dev 18, and Red Menshen. The lower confidence level boils down to the fact that the BPFDoor malware source code was leaked in 2022 , meaning it could also have bee adopted by other hacking groups. BPFDoor is a Linux backdoor that first came to light in...

The China-linked threat actor known as UNC5174 has been attributed to a new campaign that leverages a variant of a known malware dubbed SNOWLIGHT and a new open-source tool called VShell to infect Linux systems. "Threat actors are increasingly using open source tools in their arsenals for cost-effectiveness and obfuscation to save money and, in this case, plausibly blend in with the pool of non-state-sponsored and often less technical adversaries (e.g., script kiddies), thereby making attribution even more difficult," Sysdig researcher Alessandra Rizzo said in a report shared with The Hacker News. "This seems to hold especially true for this particular threat actor , who has been under the radar for the last year since being affiliated with the Chinese government." UNC5174, also referred to as Uteus (or Uetus), was previously documented by Google-owned Mandiant as exploiting security flaws in Connectwise ScreenConnect and F5 BIG-IP software to deliver a C-base...

Cybersecurity researchers have detailed a case of an incomplete patch for a previously addressed security flaw impacting the NVIDIA Container Toolkit that, if successfully exploited, could put sensitive data at risk. The original vulnerability CVE-2024-0132 (CVSS score: 9.0) is a Time-of-Check Time-of-Use (TOCTOU) vulnerability that could lead to a container escape attack and allow for unauthorized access to the underlying host. While this flaw was resolved by NVIDIA in September 2024, a new analysis by Trend Micro has revealed the fix to be incomplete and that there also exists a related performance flaw affecting Docker on Linux that could result in a denial-of-service (DoS) condition. "These issues could enable attackers to escape container isolation, access sensitive host resources, and cause severe operational disruptions," Trend Micro researcher Abdelrahman Esmail said in a new report published today. The fact that the TOCTOU vulnerability persists means that a ...

There's a virtuous cycle in technology that pushes the boundaries of what's being built and how it's being used. A new technology development emerges and captures the world's attention. People start experimenting and discover novel applications, use cases, and approaches to maximize the innovation's potential. These use cases generate significant value, fueling demand for the next iteration of the innovation, and in turn, a new wave of innovators create the next generation of use cases, driving further advancements. Containerization has become the foundation of modern, cloud-native software development, supporting new use cases and approaches to building resilient, scalable, and portable applications. It also holds the keys to the next software delivery innovation, simultaneously necessitating the evolution to secure-by-design, continuously-updated software and serving as the means to get there. Below, I'll talk through some of the innovations that led to our containerized r...

Cybersecurity researchers have shed light on an "auto-propagating" cryptocurrency mining botnet called Outlaw (aka Dota) that's known for targeting SSH servers with weak credentials. "Outlaw is a Linux malware that relies on SSH brute-force attacks, cryptocurrency mining, and worm-like propagation to infect and maintain control over systems," Elastic Security Labs said in a new analysis published Tuesday. Outlaw is also the name given to the threat actors behind the malware. It's believed to be of Romanian origin. Other hacking groups dominating the cryptojacking landscape include 8220, Keksec (aka Kek Security), Kinsing, and TeamTNT. Active since at least late 2018 , the hacking crew has brute-forced SSH servers , abusing the foothold to conduct reconnaissance and maintain persistence on the compromised hosts by adding their own SSH keys to the "authorized_keys" file. The attackers are also known to incorporate a multi-stage infection ...

Exposed PostgreSQL instances are the target of an ongoing campaign designed to gain unauthorized access and deploy cryptocurrency miners. Cloud security firm Wiz said the activity is a variant of an intrusion set that was first flagged by Aqua Security in August 2024 that involved the use of a malware strain dubbed PG_MEM . The campaign has been attributed to a threat actor Wiz tracks as JINX-0126. "The threat actor has since evolved, implementing defense evasion techniques such as deploying binaries with a unique hash per target and executing the miner payload filelessly – likely to evade detection by [cloud workload protection platform] solutions that rely solely on file hash reputation," researchers Avigayil Mechtinger, Yaara Shriki, and Gili Tikochinski said . Wiz has also revealed that the campaign has likely claimed over 1,500 victims to date, indicating that publicly-exposed PostgreSQL instances with weak or predictable credentials are prevalent enough to become ...

Meta has warned that a security vulnerability impacting the FreeType open-source font rendering library may have been exploited in the wild. The vulnerability has been assigned the CVE identifier CVE-2025-27363 , and carries a CVSS score of 8.1, indicating high severity. Described as an out-of-bounds write flaw, it could be exploited to achieve remote code execution when parsing certain font files. "An out-of-bounds write exists in FreeType versions 2.13.0 and below when attempting to parse font subglyph structures related to TrueType GX and variable font files," the company said in an advisory. "The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution." The company did not share any specifics on how the shortcoming is be...

USB drive attacks constitute a significant cybersecurity risk, taking advantage of the everyday use of USB devices to deliver malware and circumvent traditional network security measures. These attacks lead to data breaches, financial losses, and operational disruptions, with lasting impacts on an organization's reputation. An example is the Stuxnet worm discovered in 2010, a malware designed to target industrial control systems, specifically Iran's nuclear enrichment facilities. It exploited multiple zero-day vulnerabilities and spread primarily through USB drives, making it one of the first examples of a cyberattack with real-world physical effects. Stuxnet exposed the risks of removable media and raised global awareness of cybersecurity threats to critical infrastructure. How USB drive attacks propagate Attackers use various methods to deliver malicious payloads via USB drives, targeting individuals and organizations.  Drop attacks : Infected USB drives are deliberatel...

Cybersecurity researchers are alerting of an ongoing malicious campaign targeting the Go ecosystem with typosquatted modules that are designed to deploy loader malware on Linux and Apple macOS systems. "The threat actor has published at least seven packages impersonating widely used Go libraries, including one (github[.]com/shallowmulti/hypert) that appears to target financial-sector developers," Socket researcher Kirill Boychenko said in a new report. "These packages share repeated malicious filenames and consistent obfuscation techniques, suggesting a coordinated threat actor capable of pivoting rapidly." While all of them continue to be available on the official package repository, their corresponding GitHub repositories barring "github[.]com/ornatedoctrin/layout" are no longer accessible. The list of offending Go packages is below - shallowmulti/hypert (github.com/shallowmulti/hypert) shadowybulk/hypert (github.com/shadowybulk/hypert) belate...