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New Linux Bug Could Lead to User Password Leaks and Clipboard Hijacking

New Linux Bug Could Lead to User Password Leaks and Clipboard Hijacking

Mar 29, 2024 Vulnerability / Linux
Details have emerged about a vulnerability impacting the "wall" command of the util-linux package that could be potentially exploited by a bad actor to leak a user's password or alter the clipboard on certain Linux distributions. The bug, tracked as CVE-2024-28085, has been codenamed  WallEscape  by security researcher Skyler Ferrante. It has been described as a case of improper neutralization of escape sequences. "The util-linux wall command does not filter  escape sequences  from command line arguments," Ferrante  said . "This allows unprivileged users to put arbitrary text on other users' terminals, if mesg is set to "y" and wall is setgid." The  vulnerability  was introduced as part of a  commit  made in August 2013.  The "wall" command is used to write a message to the terminals of all users that are currently logged in to a server, essentially allowing users with elevated permissions to  broadcast key information  to
Linux Version of DinodasRAT Spotted in Cyber Attacks Across Several Countries

Linux Version of DinodasRAT Spotted in Cyber Attacks Across Several Countries

Mar 28, 2024 Linux / Network Security
A Linux version of a multi-platform backdoor called  DinodasRAT  has been detected in the wild targeting China, Taiwan, Turkey, and Uzbekistan,  new findings  from Kaspersky reveal. DinodasRAT, also known as XDealer, is a C++-based malware that offers the ability to harvest a wide range of sensitive data from compromised hosts. In October 2023, Slovak cybersecurity firm ESET  revealed  that a governmental entity in Guyana had been targeted as part of a cyber espionage campaign dubbed Operation Jacana to deploy the Windows version of the implant. Then last week, Trend Micro  detailed  a threat activity cluster it tracks as Earth Krahang and which has shifted to using DinodasRAT since 2023 in its attacks aimed at several government entities worldwide. The use of DinodasRAT has been attributed to various China-nexus threat actors, including  LuoYu , once again reflecting the tool sharing prevalent among hacking crews identified as acting on behalf of the country. Kaspersky said it
5 Actionable Steps to Prevent GenAI Data Leaks Without Fully Blocking AI Usage

5 Actionable Steps to Prevent GenAI Data Leaks Without Fully Blocking AI Usage

Oct 01, 2024Generative AI / Data Protection
Since its emergence, Generative AI has revolutionized enterprise productivity. GenAI tools enable faster and more effective software development, financial analysis, business planning, and customer engagement. However, this business agility comes with significant risks, particularly the potential for sensitive data leakage. As organizations attempt to balance productivity gains with security concerns, many have been forced to choose between unrestricted GenAI usage to banning it altogether. A new e-guide by LayerX titled 5 Actionable Measures to Prevent Data Leakage Through Generative AI Tools is designed to help organizations navigate the challenges of GenAI usage in the workplace. The guide offers practical steps for security managers to protect sensitive corporate data while still reaping the productivity benefits of GenAI tools like ChatGPT. This approach is intended to allow companies to strike the right balance between innovation and security. Why Worry About ChatGPT? The e
Russian Hackers May Have Targeted Ukrainian Telecoms with Upgraded 'AcidPour' Malware

Russian Hackers May Have Targeted Ukrainian Telecoms with Upgraded 'AcidPour' Malware

Mar 22, 2024 Linux / Cyber Warfare
The data wiping malware called  AcidPour  may have been deployed in attacks targeting four telecom providers in Ukraine, new findings from SentinelOne show. The cybersecurity firm also confirmed connections between the malware and AcidRain, tying it to threat activity clusters associated with Russian military intelligence. "AcidPour's expanded capabilities would enable it to better disable embedded devices including networking, IoT, large storage (RAIDs), and possibly ICS devices running Linux x86 distributions," security researchers Juan Andres Guerrero-Saade and Tom Hegel  said . AcidPour is a variant of  AcidRain , a wiper that was used to render Viasat KA-SAT modems operable at the onset of the Russo-Ukrainian war in early 2022 and cripple Ukraine's military communications. It also builds upon the latter's features, while targeting Linux systems running on x86 architecture. AcidRain, on the other hand, is compiled for MIPS architecture. Where AcidRain w
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2024 State of SaaS Security Report eBook

websiteWing SecuritySaaS Security / Insider Threat
A research report featuring astonishing statistics on the security risks of third-party SaaS applications.
Suspected Russian Data-Wiping 'AcidPour' Malware Targeting Linux x86 Devices

Suspected Russian Data-Wiping 'AcidPour' Malware Targeting Linux x86 Devices

Mar 19, 2024 Linux / Cyber Espionage
A new variant of a data wiping malware called AcidRain has been detected in the wild that's specifically designed for targeting Linux x86 devices. The malware, dubbed AcidPour, is compiled for Linux x86 devices, SentinelOne's Juan Andres Guerrero-Saade said in a series of posts on X. "The new variant [...] is an ELF binary compiled for x86 (not MIPS) and while it refers to similar devices/strings, it's a largely different codebase," Guerrero-Saade  noted . AcidRain  first came to light  in the early days of the Russo-Ukrainian war, with the malware deployed against KA-SAT modems from U.S. satellite company Viasat. An ELF binary compiled for MIPS architectures, it is capable of wiping the filesystem and different known storage device files by recursively iterating over common directories for most Linux distributions. The cyber attack was  subsequently attributed  to Russia by the Five Eyes nations, along with Ukraine and the European Union. AcidPour, as the
New BIFROSE Linux Malware Variant Using Deceptive VMware Domain for Evasion

New BIFROSE Linux Malware Variant Using Deceptive VMware Domain for Evasion

Mar 01, 2024 Linux / Cyber Threat
Cybersecurity researchers have discovered a new Linux variant of a remote access trojan (RAT) called BIFROSE (aka Bifrost) that uses a deceptive domain mimicking VMware. "This latest version of Bifrost aims to bypass security measures and compromise targeted systems," Palo Alto Networks Unit 42 researchers Anmol Maurya and Siddharth Sharma  said . BIFROSE  is one of the long-standing threats that has been active since 2004. It has been offered for sale in underground forums for up to $10,000 in the past, according to a  report  from Trend Micro in December 2015. The malware has been put to use by a state-backed hacking group from China tracked as  BlackTech  (aka Circuit Panda, HUAPI, Manga Taurus, Palmerworm, PLEAD, Red Djinn, and Temp.Overboard), which has a history of striking organizations in Japan, Taiwan, and the U.S. It's suspected that the threat actor purchased the source code or gained access to it around 2010, and repurposed the malware for use in its own
GTPDOOR Linux Malware Targets Telecoms, Exploiting GPRS Roaming Networks

GTPDOOR Linux Malware Targets Telecoms, Exploiting GPRS Roaming Networks

Feb 29, 2024 Linux / Network Security
Threat hunters have discovered a new Linux malware called  GTPDOOR  that's designed to be deployed in telecom networks that are adjacent to GPRS roaming exchanges ( GRX ) The  malware  is novel in the fact that it leverages the GPRS Tunnelling Protocol ( GTP ) for command-and-control (C2) communications. GPRS roaming allows subscribers to access their GPRS services while they are beyond the reach of their home mobile network. This is facilitated by means of a GRX that transports the roaming traffic using GTP between the visited and the home Public Land Mobile Network ( PLMN ). Security researcher haxrob, who discovered two  GTPDOOR   artifacts  uploaded to VirusTotal from China and Italy, said the backdoor is likely linked to a known threat actor tracked as  LightBasin  (aka UNC1945), which was previously disclosed by CrowdStrike in October 2021 in connection with a series of attacks targeting the telecom sector to steal subscriber information and call metadata. "When run, the f
FBI Warns U.S. Healthcare Sector of Targeted BlackCat Ransomware Attacks

FBI Warns U.S. Healthcare Sector of Targeted BlackCat Ransomware Attacks

Feb 28, 2024 Ransomware / Healthcare
The U.S. government is warning about the resurgence of BlackCat (aka ALPHV) ransomware attacks targeting the healthcare sector as recently as this month. "Since mid-December 2023, of the nearly 70 leaked victims, the healthcare sector has been the most commonly victimized," the government  said  in an updated advisory. "This is likely in response to the ALPHV/BlackCat administrator's post encouraging its affiliates to target hospitals after operational action against the group and its infrastructure in early December 2023." The alert comes courtesy of the Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Security Agency (CISA), and the Department of Health and Human Services (HHS). The BlackCat ransomware operation suffered a major blow late last year after a coordinated law enforcement operation led to the  seizure of its dark leak sites . But the takedown turned out to be a failure after the group managed to regain control of the
Open-Source Xeno RAT Trojan Emerges as a Potent Threat on GitHub

Open-Source Xeno RAT Trojan Emerges as a Potent Threat on GitHub

Feb 27, 2024 Malware / Network Security
An "intricately designed" remote access trojan (RAT) called  Xeno RAT  has been made available on GitHub, making it easily accessible to other actors at no extra cost. Written in C# and compatible with Windows 10 and Windows 11 operating systems, the open-source RAT comes with a "comprehensive set of features for remote system management," according to its developer, who goes by the name moom825. It includes a SOCKS5 reverse proxy and the ability to record real-time audio, as well as incorporate a hidden virtual network computing ( hVNC ) module along the lines of  DarkVNC , which allows attackers to gain remote access to an infected computer. "Xeno RAT is developed entirely from scratch, ensuring a unique and tailored approach to remote access tools," the developer  states  in the project description. Another notable aspect is that it has a builder that enables the creation of bespoke variants of the malware.  It's worth noting that moom825 is a
New Wi-Fi Vulnerabilities Expose Android and Linux Devices to Hackers

New Wi-Fi Vulnerabilities Expose Android and Linux Devices to Hackers

Feb 21, 2024 Network Security / Vulnerability
Cybersecurity researchers have identified two authentication bypass flaws in open-source Wi-Fi software found in Android, Linux, and ChromeOS devices that could trick users into joining a malicious clone of a legitimate network or allow an attacker to join a trusted network without a password. The vulnerabilities, tracked as CVE-2023-52160 and CVE-2023-52161, have been discovered following a security evaluation of  wpa_supplicant  and Intel's iNet Wireless Daemon ( IWD ), respectively. The flaws "allow attackers to trick victims into connecting to malicious clones of trusted networks and intercept their traffic, and join otherwise secure networks without needing the password," Top10VPN  said  in a new research conducted in collaboration with Mathy Vanhoef, who has previously uncovered Wi-Fi attacks like  KRACK ,  DragonBlood , and  TunnelCrack . CVE-2023-52161, in particular, permits an adversary to gain unauthorized access to a protected Wi-Fi network, exposing exis
New Migo Malware Targeting Redis Servers for Cryptocurrency Mining

New Migo Malware Targeting Redis Servers for Cryptocurrency Mining

Feb 20, 2024 Server Security / Cryptojacking
A novel malware campaign has been observed targeting Redis servers for initial access with the ultimate goal of mining cryptocurrency on compromised Linux hosts. "This particular campaign involves the use of a number of novel system weakening techniques against the data store itself," Cado security researcher Matt Muir  said  in a technical report. The cryptojacking attack is facilitated by a malware codenamed Migo, a Golang ELF binary that comes fitted with compile-time obfuscation and the ability to persist on Linux machines. The cloud security company said it detected the campaign after it identified an "unusual series of commands" targeting its Redis honeypots that are engineered to lower security defenses by disabling the following configuration options - protected-mode   replica-read-only aof-rewrite-incremental-fsync , and rdb-save-incremental-fsync It's suspected that these options are turned off in order to send additional commands to the Re
Ivanti Pulse Secure Found Using 11-Year-Old Linux Version and Outdated Libraries

Ivanti Pulse Secure Found Using 11-Year-Old Linux Version and Outdated Libraries

Feb 15, 2024 Firmware Security / Reverse Engineering
A reverse engineering of the firmware running on Ivanti Pulse Secure appliances has revealed numerous weaknesses, once again underscoring the challenge of securing software supply chains. Eclypsiusm, which acquired firmware version 9.1.18.2-24467.1 as part of the process, said the base operating system used by the Utah-based software company for the device is CentOS 6.4. "Pulse Secure runs an 11-year-old version of Linux which hasn't been supported since November 2020," the firmware security company  said  in a report shared with The Hacker News. The development comes as threat actors are capitalizing on a number of security flaws discovered in Ivanti Connect Secure, Policy Secure, and ZTA gateways to  deliver  a  wide range of malware , including web shells, stealers, and backdoors. The vulnerabilities that have come under active exploitation in recent months comprise CVE-2023-46805, CVE-2024-21887, and CVE-2024-21893. Last week, Ivanti also  disclosed  another bug
Critical Boot Loader Vulnerability in Shim Impacts Nearly All Linux Distros

Critical Boot Loader Vulnerability in Shim Impacts Nearly All Linux Distros

Feb 07, 2024 Device Security / Vulnerability
The maintainers of shim have released  version 15.8  to address six security flaws, including a critical bug that could pave the way for remote code execution under specific circumstances. Tracked as  CVE-2023-40547  (CVSS score: 9.8), the vulnerability could be exploited to achieve a Secure Boot bypass. Bill Demirkapi of the Microsoft Security Response Center (MSRC) has been  credited  with discovering and reporting the bug. Major Linux distributions that use shim such as Debian , Red Hat , SUSE , and Ubuntu have all released advisories for the security flaw. "The shim's http boot support (httpboot.c) trusts attacker-controlled values when parsing an HTTP response, leading to a completely controlled out-of-bounds write primitive," Oracle's Alan Coopersmith  noted  in a message shared on the Open Source Security mailing list oss-security. Demirkapi, in a  post  shared on X (formerly Twitter) late last month, said the vulnerability "exists in every Linux bo
RunC Flaws Enable Container Escapes, Granting Attackers Host Access

RunC Flaws Enable Container Escapes, Granting Attackers Host Access

Jan 31, 2024 Software Security / Linux
Multiple security vulnerabilities have been disclosed in the runC command line tool that could be exploited by threat actors to escape the bounds of the container and stage follow-on attacks. The vulnerabilities, tracked as CVE-2024-21626, CVE-2024-23651, CVE-2024-23652, and CVE-2024-23653, have been collectively dubbed  Leaky Vessels  by cybersecurity vendor Snyk. "These container escapes could allow an attacker to gain unauthorized access to the underlying host operating system from within the container and potentially permit access to sensitive data (credentials, customer info, etc.), and launch further attacks, especially when the access gained includes superuser privileges," the company  said  in a report shared with The Hacker News. runC  is a tool for spawning and running containers on Linux. It was originally developed as part of Docker and later  spun out  into a separate open-source library in 2015. A brief description of each of the flaws is below - CVE-202
New Glibc Flaw Grants Attackers Root Access on Major Linux Distros

New Glibc Flaw Grants Attackers Root Access on Major Linux Distros

Jan 31, 2024 Vulnerability / Endpoint Security
Malicious local attackers can obtain full root access on Linux machines by taking advantage of a newly disclosed security flaw in the GNU C library (aka glibc). Tracked as CVE-2023-6246 (CVSS score: 7.8), the heap-based buffer overflow vulnerability is rooted in glibc's __vsyslog_internal() function, which is used by  syslog() and vsyslog()  for system logging purposes. It's said to have been accidentally introduced in August 2022 with the release of glibc 2.37. "This flaw allows local privilege escalation, enabling an unprivileged user to gain full root access," Saeed Abbasi, product manager of the Threat Research Unit at Qualys,  said , adding it impacts major Linux distributions like Debian, Ubuntu, and Fedora. A threat actor could exploit the flaw to obtain elevated permissions via specially crafted inputs to applications that employ these logging functions. "Although the  vulnerability  requires specific conditions to be exploited (such as an unusuall
Malicious PyPI Packages Slip WhiteSnake InfoStealer Malware onto Windows Machines

Malicious PyPI Packages Slip WhiteSnake InfoStealer Malware onto Windows Machines

Jan 29, 2024 PyPI Repository / Malware
Cybersecurity researchers have identified malicious packages on the open-source Python Package Index (PyPI) repository that deliver an information stealing malware called WhiteSnake Stealer on Windows systems. The malware-laced packages are named nigpal, figflix, telerer, seGMM, fbdebug, sGMM, myGens, NewGends, and TestLibs111. They have been uploaded by a threat actor named "WS." "These packages incorporate Base64-encoded source code of PE or other Python scripts within their setup.py files," Fortinet FortiGuard Labs  said  in an analysis published last week. "Depending on the victim devices' operating system, the final malicious payload is dropped and executed when these Python packages are installed." While Windows systems are infected with WhiteSnake Stealer, compromised Linux hosts are served a Python script designed to harvest information. The activity, which predominantly targets Windows users, overlaps with a  prior campaign  that JFrog
Beware: 3 Malicious PyPI Packages Found Targeting Linux with Crypto Miners

Beware: 3 Malicious PyPI Packages Found Targeting Linux with Crypto Miners

Jan 04, 2024 Cryptocurrency Miner / Malware
Three new malicious packages have been discovered in the Python Package Index (PyPI) open-source repository with capabilities to deploy a cryptocurrency miner on affected Linux devices. The three harmful packages, named modularseven, driftme, and catme, attracted a total of 431 downloads over the past month before they were taken down. "These packages, upon initial use, deploy a CoinMiner executable on Linux devices," Fortinet FortiGuard Labs researcher Gabby Xiong  said , adding the activity shares overlaps with a  prior campaign  that involved the use of a package called culturestreak to deploy a crypto miner. The malicious code resides in the __init__.py file, which decodes and retrieves the first stage from a remote server, a shell script ("unmi.sh") that fetches a configuration file for the mining activity as well as the CoinMiner file  hosted on GitLab . The  ELF binary  file is then executed in the background using the  nohup command , thus ensuring that the process contin
Warning: Poorly Secured Linux SSH Servers Under Attack for Cryptocurrency Mining

Warning: Poorly Secured Linux SSH Servers Under Attack for Cryptocurrency Mining

Dec 27, 2023 Malware / Server Security
Poorly secured Linux SSH servers are being targeted by bad actors to install port scanners and dictionary attack tools with the goal of targeting other vulnerable servers and co-opting them into a network to carry out cryptocurrency mining and distributed denial-of-service (DDoS) attacks. "Threat actors can also choose to install only scanners and sell the breached IP and account credentials on the dark web," the AhnLab Security Emergency Response Center (ASEC)  said  in a report on Tuesday. In these attacks, adversaries try to guess a server's SSH credentials by running through a list of commonly used combinations of usernames and passwords, a technique called dictionary attack. Should the brute-force attempt be successful, it's followed by the threat actor deploying other malware, including scanners, to scan for other susceptible systems on the internet. Specifically, the scanner is designed to look for systems where port 22 -- which is associated with the SSH
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