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Apple has released yet another round of security patches to address three actively exploited zero-day flaws impacting iOS, iPadOS, macOS, watchOS, and Safari, taking the total tally of zero-day bugs discovered in its software this year to 16. The list of security vulnerabilities is as follows - CVE-2023-41991  - A certificate validation issue in the Security framework that could allow a malicious app to bypass signature validation. CVE-2023-41992  - A security flaw in Kernel that could allow a local attacker to elevate their privileges. CVE-2023-41993  - A WebKit flaw that could result in arbitrary code execution when processing specially crafted web content. Apple did not provide additional specifics barring an acknowledgement that the "issue may have been actively exploited against versions of iOS before iOS 16.7." The updates are available for the following devices and operating systems - iOS 16.7 and iPadOS 16.7  - iPhone 8 and later, iPad Pro (all models), iP

A set of memory corruption flaws have been discovered in the  ncurses  (short for  new curses ) programming library that could be exploited by threat actors to run malicious code on vulnerable Linux and macOS systems. "Using environment variable poisoning, attackers could chain these vulnerabilities to elevate privileges and run code in the targeted program's context or perform other malicious actions," Microsoft Threat Intelligence researchers Jonathan Bar Or, Emanuele Cozzi, and Michael Pearse  said  in a technical report published today. The vulnerabilities, collectively tracked as  CVE-2023-29491  (CVSS score of 7.8), have been  addressed  as of April 2023. Microsoft said it also worked with Apple on remediating the macOS-specific issues related to these flaws. Environment variables are user-defined values that can be used by multiple programs on a system and can affect the manner in which they behave on the system. Manipulating the variables can cause applica

Threat actors are leveraging access to malware-infected Windows and macOS machines to deliver a proxy server application and use them as exit nodes to reroute proxy requests. According to AT&T Alien Labs, the unnamed company that offers the proxy service operates more than 400,000 proxy exit nodes, although it's not immediately clear how many of them were co-opted by malware installed on infected machines without user knowledge and interaction. "Although the proxy website claims that its exit nodes come only from users who have been informed and agreed to the use of their device," the cybersecurity company  said  it found evidence where "malware writers are installing the proxy silently in infected systems." Multiple malware families have been observed delivering the proxy to users searching for cracked software and games. The proxy software, written in the Go programming language, is capable of targeting both Windows and macOS, with the former capable o

Apple has announced plans to require developers to submit reasons to use certain APIs in their apps starting later this year with the release of iOS 17, iPadOS 17, macOS Sonoma, tvOS 17, and watchOS 10 to prevent their abuse for data collection. "This will help ensure that apps only use these APIs for their intended purpose," the company  said  in a statement. "As part of this process, you'll need to select one or more approved reasons that accurately reflect how your app uses the API, and your app can only use the API for the reasons you've selected." The APIs that  require  reasons for use relate to the following - File timestamp APIs System boot time APIs Disk space APIs Active keyboard APIs, and User defaults APIs The iPhone maker said it's making the move to ensure that such APIs are not abused by app developers to collect device signals to carry out  fingerprinting , which could be employed to  uniquely identify users  across different a

A new study conducted by Uptycs has uncovered a stark increase in the distribution of information stealing (a.k.a. infostealer or stealer) malware. Incidents have more than doubled in Q1 2023, indicating an alarming trend that threatens global organizations. According to the new Uptycs' whitepaper,  Stealers are Organization Killers , a variety of new info stealers have emerged this year, preying on Windows, Linux, and macOS systems. Telegram has notably been used extensively by these malware authors for command, control, and data exfiltration. What is a Stealer? A stealer is a type of malware that targets its victim by stealing sensitive information that can include passwords, login credentials, and other personal data. After collecting such data, the stealer sends it to the threat actor's command and control (C2) system. RedLine and Vidar, two well-known stealers, took advantage of log-providing services to infiltrate private systems. RedLine primarily targets credenti

A new malware family called  Realst  has become the latest to target Apple macOS systems, with a third of the samples already designed to infect macOS 14 Sonoma, the upcoming major release of the operating system. Written in the Rust programming language, the malware is distributed in the form of bogus blockchain games and is capable of "emptying crypto wallets and stealing stored password and browser data" from both Windows and macOS machines. Realst was first discovered in the wild by security researcher  iamdeadlyz . "Realst Infostealer is distributed via malicious websites advertising fake blockchain games with names such as Brawl Earth, WildWorld, Dawnland, Destruction, Evolion, Pearl, Olymp of Reptiles, and SaintLegend," SentinelOne security researcher Phil Stokes  said  in a report. "Each version of the fake blockchain game is hosted on its own website complete with associated Twitter and Discord accounts." The cybersecurity firm, which identif

As the number of people using macOS keeps going up, so does the desire of hackers to take advantage of flaws in Apple's operating system.  What Are the Rising Threats to macOS? There is a common misconception among macOS fans that Apple devices are immune to hacking and malware infection. However, users have been facing more and more dangers recently. Inventive attackers are specifically targeting Mac systems, as seen with the "Geacon" Cobalt Strike tool attack. This tool enables them to perform malicious actions such as data theft, privilege elevation, and remote device control, placing the security and privacy of Mac users at grave risk. Earlier this year, researchers also uncovered the MacStealer malware, which also stole sensitive data from Apple users. Documents, iCloud keychain data, browser cookies, credit card credentials – nothing is safe from the prying eyes.  But that's not all. CloudMensis is malicious software that specifically targets macOS systems,

Apple has  rolled out security updates  to iOS, iPadOS, macOS, tvOS, watchOS, and Safari to address several security vulnerabilities, including one actively exploited zero-day bug in the wild. Tracked as  CVE-2023-38606 , the shortcoming resides in the kernel and permits a malicious app to modify sensitive kernel state potentially. The company said it was addressed with improved state management. "Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.1," the tech giant noted in its advisory. It's worth noting that CVE-2023-38606 is the fourth security vulnerability discovered in connection with  Operation Triangulation , a sophisticated mobile cyber espionage campaign targeting iOS devices since 2019 using a zero-click exploit chain. The other two zero-days,  CVE-2023-32434 and CVE-2023-32435 , were patched by Apple last month. A third shortcoming, CVE-2022-46690 , was addressed as part of securi

Apple has released  Rapid Security Response  updates for iOS, iPadOS, macOS, and Safari web browser to  address  a zero-day flaw that it said has been actively exploited in the wild. The WebKit bug, cataloged as  CVE-2023-37450 , could allow threat actors to achieve arbitrary code execution when processing specially crafted web content. The iPhone maker said it addressed the issue with improved checks. Credited with discovering and reporting the flaw is an anonymous researcher. As with most cases like this, there are scant details about the nature and the scale of the attacks and the identity of the threat actor behind them. But Apple noted in a terse advisory that it's "aware of a report that this issue may have been actively exploited." The updates, iOS 16.5.1 (a), iPadOS 16.5.1 (a), macOS Ventura 13.4.1 (a), and Safari 16.5.2, are available for devices running the following operating system versions: iOS 16.5.1 and iPadOS 16.5.1 macOS Ventura 13.4.1 macOS Big

Researchers have pulled back the curtain on an updated version of an Apple macOS malware called RustBucket that comes with improved capabilities to establish persistence and avoid detection by security software. "This variant of RustBucket, a malware family that targets macOS systems, adds persistence capabilities not previously observed," Elastic Security Labs researchers  said  in a report published this week, adding it's "leveraging a dynamic network infrastructure methodology for command-and-control." RustBucket is the work of a North Korean threat actor known as BlueNoroff, which is part of a larger intrusion set tracked under the name  Lazarus Group , an elite hacking unit supervised by the Reconnaissance General Bureau (RGB), the country's primary intelligence agency. The malware came to light in April 2023, when Jamf Threat Labs  described  it as an AppleScript-based backdoor capable of retrieving a second-stage payload from a remote server. Elas

An unknown cryptocurrency exchange located in Japan was the target of a new attack earlier this month to deploy an Apple macOS backdoor called JokerSpy. Elastic Security Labs, which is monitoring the intrusion set under the name  REF9134 ,  said  the attack led to the installation of Swiftbelt , a Swift-based enumeration tool inspired by an open-source utility called  SeatBelt . JokerSky was  first documented  by Bitdefender last week, describing it as a sophisticated toolkit designed to breach macOS machines. Very little is known about the threat actor behind the operation other than the fact that the attacks leverage a set of programs written in Python and Swift that come with capabilities to gather data and execute arbitrary commands on compromised hosts. A primary component of the toolkit is a self-signed multi-architecture binary known as xcc that's engineered to check for FullDiskAccess and ScreenRecording permissions. The file is signed as XProtectCheck, indicating an

Apple on Thursday  rolled out security updates  to iOS, iPadOS, macOS, tvOS, watchOS, and the Safari web browser to address dozens of flaws, including three new zero-days that it said are being actively exploited in the wild. The three security shortcomings are listed below - CVE-2023-32409  - A WebKit flaw that could be exploited by a malicious actor to break out of the Web Content sandbox. It was addressed with improved bounds checks. CVE-2023-28204  - An out-of-bounds read issue in WebKit that could be abused to disclose sensitive information when processing web content. It was addressed with improved input validation. CVE-2023-32373  - A use-after free bug in WebKit that could lead to arbitrary code execution when processing maliciously crafted web content. It was addressed with improved memory management. The iPhone maker credited Clément Lecigne of Google's Threat Analysis Group (TAG) and Donncha Ó Cearbhaill of Amnesty International's Security Lab for reporting C

Threat actors are advertising a new information stealer for the Apple macOS operating system called  Atomic macOS Stealer  (or AMOS) on Telegram for $1,000 per month, joining the likes of  MacStealer . "The Atomic macOS Stealer can steal various types of information from the victim's machine, including Keychain passwords, complete system information, files from the desktop and documents folder, and even the macOS password," Cyble researchers  said  in a technical report. Among other features include its ability to extract data from web browsers and cryptocurrency wallets like Atomic, Binance, Coinomi, Electrum, and Exodus. Threat actors who purchase the stealer from its developers are also provided a ready-to-use web panel for managing the victims. The malware takes the form of an unsigned disk image file (Setup.dmg) that, when executed, urges the victim to enter their system password on a bogus prompt to escalate privileges and carry out its malicious activities --

Enterprise communications service provider 3CX confirmed that the  supply chain attack  targeting its desktop application for Windows and macOS was the handiwork of a threat actor with North Korean nexus. The findings are the result of an interim assessment conducted by Google-owned Mandiant, whose services were enlisted after the intrusion came to light late last month. The threat intelligence and incident response unit is tracking the activity under its uncategorized moniker  UNC4736 . It's worth noting that CrowdStrike has tied the attack to a Lazarus sub-group dubbed Labyrinth Chollima , citing tactical overlaps. The cybersecurity firm told The Hacker News the latest findings appear to be consistent with their previous attribution. The  attack chain , based on analyses from multiple security vendors, entailed the use of DLL side-loading techniques to load an information stealer known as ICONIC Stealer, followed by a second-stage called  Gopuram  in selective attacks aimed

Apple on Friday released security updates for  iOS, iPadOS ,  macOS , and  Safari web browser  to address a pair of zero-day flaws that are being exploited in the wild. The two vulnerabilities are as follows - CVE-2023-28205  - A  use after free issue  in WebKit that could lead to arbitrary code execution when processing specially crafted web content. CVE-2023-28206  - An  out-of-bounds write issue  in IOSurfaceAccelerator that could enable an app to execute arbitrary code with kernel privileges. Apple said it addressed CVE-2023-28205 with improved memory management and the second with better input validation, adding it's aware the bugs "may have been actively exploited." Credited with discovering and reporting the flaws are Clément Lecigne of Google's Threat Analysis Group (TAG) and Donncha Ó Cearbhaill of Amnesty International's Security Lab. Details about the two vulnerabilities have been withheld in light of active exploitation and to prevent more

Enterprise communications software maker 3CX on Thursday confirmed that multiple versions of its desktop app for Windows and macOS are affected by a  supply chain attack . The version numbers include  18.12.407 and 18.12.416  for Windows and  18.11.1213, 18.12.402, 18.12.407, and 18.12.416  for macOS. The issue has been assigned the CVE identifier CVE-2023-29059 . The company said it's engaging the services of Google-owned Mandiant to review the incident. In the interim, it's urging its customers of self-hosted and on-premise versions of the software to update to version 18.12.422. "3CX Hosted and StartUP users do not need to update their servers as we will be updating them over the night automatically," 3CX CEO Nick Galea  said  in a blog post. "Servers will be restarted and the new Electron App MSI/DMG will be installed on the server." Evidence available so far points to either a compromise of 3CX's software build pipeline to distribute Windows an

Trojanized versions of legitimate applications are being used to deploy evasive cryptocurrency mining malware on macOS systems. Jamf Threat Labs, which made the discovery, said the XMRig coin miner was executed by means of an unauthorized modification in Final Cut Pro, a video editing software from Apple. "This malware makes use of the Invisible Internet Project (i2p) [...] to download malicious components and send mined currency to the attacker's wallet," Jamf researchers Matt Benyo, Ferdous Saljooki, and Jaron Bradley  said  in a report shared with The Hacker News. An earlier iteration of the campaign was  documented  exactly a year ago by Trend Micro, which pointed out the malware's use of i2p to conceal network traffic and speculated that it may have been delivered as a DMG file for Adobe Photoshop CC 2019.  The Apple device management company said the source of the cryptojacking apps can be traced to Pirate Bay, with the earliest uploads dating all the way

Apple on Monday rolled out security updates for  iOS, iPadOS ,  macOS , and  Safari  to address a zero-day flaw that it said has been actively exploited in the wild. Tracked as  CVE-2023-23529 , the issue relates to a type confusion bug in the WebKit browser engine that could be activated when processing maliciously crafted web content, culminating in arbitrary code execution. The iPhone maker said the bug was addressed with improved checks, adding it's "aware of a report that this issue may have been actively exploited." An anonymous researcher has been credited with reporting the flaw. It's not immediately clear as to how the vulnerability is being exploited in real-world attacks, but it's the second actively abused type confusion flaw in WebKit to be patched by Apple after  CVE-2022-42856  in as many months, which was closed in December 2022.  WebKit flaws are also notable for the fact that they impact every third-party web browser that's available fo