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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

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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

Microsoft has disclosed details of a now-patched security flaw in Apple macOS that could be exploited by an attacker to get around security protections imposed to prevent the execution of malicious applications. The shortcoming, dubbed  Achilles  ( CVE-2022-42821 , CVSS score: 5.5), was addressed by the iPhone maker in  macOS Ventura 13 ,  Monterey 12.6.2 , and  Big Sur 11.7.2 , describing it as a logic issue that could be weaponized by an app to circumvent Gatekeeper checks. "Gatekeeper bypasses such as this could be leveraged as a vector for initial access by malware and other threats and could help increase the success rate of malicious campaigns and attacks on macOS," Jonathan Bar Or of the Microsoft 365 Defender Research Team  said . Gatekeeper is a  security mechanism  designed to ensure that only trusted apps run on the operating system. This is  enforced  by means of an extended attribute called "com.apple.quarantine" that's assigned to files downlo

Apple on Tuesday rolled out security updates to iOS, iPadOS, macOS, tvOS, and Safari web browser to address a new zero-day vulnerability that could result in the execution of malicious code. Tracked as  CVE-2022-42856 , the issue has been described by the tech giant as a type confusion issue in the WebKit browser engine that could be triggered when processing specially crafted content, leading to arbitrary code execution. The company said it's "aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.1." While details surrounding the exact nature of the attacks are unknown as yet, it's likely that it involved a case of social engineering or a watering hole to infect the devices when visiting a rogue or legitimate-but-compromised domain via the browser. It's worth noting that every third-party web browser that's available for iOS and iPadOS, including Google Chrome, Mozilla Firefox, and Microsoft Edg

A now-patched security flaw in Apple's iOS and macOS operating systems could have potentially enabled apps with Bluetooth access to eavesdrop on conversations with Siri. Apple said "an app may be able to record audio using a pair of connected AirPods," adding it addressed the Core Bluetooth issue in iOS 16.1 with improved entitlements. Credited with discovering and reporting the bug in August 2022 is app developer Guilherme Rambo. The bug, dubbed  SiriSpy , has been assigned the identifier CVE-2022-32946. "Any app with access to Bluetooth could record your conversations with Siri and audio from the iOS keyboard dictation feature when using AirPods or Beats headsets," Rambo  said  in a write-up. "This would happen without the app requesting microphone access permission and without the app leaving any trace that it was listening to the microphone." The vulnerability, according to Rambo, relates to a service called DoAP that's included in AirPo

A previously undocumented command-and-control (C2) framework dubbed Alchimist is likely being used in the wild to target Windows, macOS, and Linux systems. "Alchimist C2 has a web interface written in Simplified Chinese and can generate a configured payload, establish remote sessions, deploy payload to the remote machines, capture screenshots, perform remote shellcode execution, and run arbitrary commands," Cisco Talos  said  in a report shared with The Hacker News. Written in GoLang, Alchimist is complemented by a beacon implant called Insekt, which comes with remote access features that can be instrumented by the C2 server. The discovery of Alchimist and its assorted family of malware implants comes three months after Talos also detailed another self-contained framework known as  Manjusaka , which has been  touted  as the "Chinese sibling of Sliver and Cobalt Strike." Even more interestingly, both Manjusaka and Alchimist pack in similar functionalities, desp

Security researchers have shared details about a now-addressed security flaw in Apple's macOS operating system that could be potentially exploited to run malicious applications in a manner that can bypass Apple's security measures. The vulnerability, tracked as  CVE-2022-32910 , is rooted in the built-in Archive Utility and "could lead to the execution of an unsigned and unnotarized application without displaying security prompts to the user, by using a specially crafted archive," Apple device management firm Jamf said in an analysis. Following responsible disclosure on May 31, 2022, Apple addressed the issue as part of  macOS Big Sur 11.6.8  and  Monterey 12.5  released on July 20, 2022. The tech giant, for its part, also revised the earlier-issued advisories as of October 4 to add an entry for the flaw. Apple described the bug as a logic issue that could allow an archive file to get around Gatekeeper checks, which is designed so as to ascertain that only trust

Apple has released another round of security updates to address multiple vulnerabilities in iOS and macOS, including a new zero-day flaw that has been used in attacks in the wild. The issue, assigned the identifier  CVE-2022-32917 , is rooted in the Kernel component and could enable a malicious app to execute arbitrary code with kernel privileges. "Apple is aware of a report that this issue may have been actively exploited," the iPhone maker acknowledged in a brief statement, adding it resolved the bug with improved bound checks. An anonymous researcher has been credited with reporting the shortcoming. It's worth noting that CVE-2022-32917 is also the  second Kernel related zero-day flaw  that Apple has remediated in less than a month. Patches are available in versions  iOS 15.7, iPadOS 15.7 ,  iOS 16 ,  macOS Big Sur 11.7 , and  macOS Monterey 12.6 . The iOS and iPadOS updates cover iPhone 6s and later, iPad Pro (all models), iPad Air 2 and later, iPad 5th generati

Apple on Wednesday released security updates for  iOS, iPadOS , and  macOS  platforms to remediate two zero-day vulnerabilities previously exploited by threat actors to compromise its devices. The list of issues is below - CVE-2022-32893  - An out-of-bounds write issue in WebKit which could lead to the execution of arbitrary code by processing a specially crafted web content CVE-2022-32894  - An out-of-bounds write issue in the operating system's Kernel that could be abused by a malicious application to execute arbitrary code with the highest privileges Apple said it addressed both the issues with improved bounds checking, adding it's aware the vulnerabilities "may have been actively exploited." The company did not disclose any additional information regarding these attacks or the identities of the threat actors perpetrating them, although it's likely that they were abused as part of highly-targeted intrusions. The latest update brings the total number o

Apple on Wednesday rolled out  software fixes  for iOS, iPadOS, macOS, tvOS, and watchOS to address a number of security flaws affecting its platforms. This includes at least 37 flaws spanning different components in iOS and macOS that range from privilege escalation to arbitrary code execution and from information disclosure to denial-of-service (DoS). Chief among them is CVE-2022-2294, a memory corruption flaw in the WebRTC component that Google  disclosed  earlier this month as having been exploited in real-world attacks aimed at users of the Chrome browser. There is, however, no evidence of in-the-wild zero-day exploitation of the flaw targeting iOS, macOS, and Safari. Besides CVE-2022-2294, the updates also address several arbitrary code execution flaws impacting Apple Neural Engine (CVE-2022-32810, CVE-2022-32829, and CVE-2022-32840), Audio (CVE-2022-32820), GPU Drivers (CVE-2022-32821), ImageIO (CVE-2022-32802), IOMobileFrameBuffer (CVE-2022-26768), Kernel (CVE-2022-32813

Cybersecurity researchers have taken the wraps off a previously undocumented spyware targeting the Apple macOS operating system. The malware, codenamed  CloudMensis  by Slovak cybersecurity firm ESET, is said to exclusively use public cloud storage services such as pCloud, Yandex Disk, and Dropbox for receiving attacker commands and exfiltrating files. "Its capabilities clearly show that the intent of its operators is to gather information from the victims' Macs by exfiltrating documents, keystrokes, and screen captures," ESET researcher Marc-Etienne M.Léveillé  said  in a report published today. CloudMensis, written in Objective-C, was first discovered in April 2022 and is designed to strike both Intel and Apple silicon architectures. The initial infection vector for the attacks and the targets remain unknown as yet. But its very limited distribution is an indication that the malware is being used as part of a highly targeted operation directed against entities of i

Apple on Wednesday announced it plans to introduce an enhanced security setting called  Lockdown Mode  in iOS 16, iPadOS 16, and macOS Ventura to safeguard high-risk users against "highly targeted cyberattacks." The "extreme, optional protection" feature, now available for preview in beta versions of its upcoming software, is designed to counter a surge in threats posed by private companies developing state-sponsored surveillanceware such as  Pegasus ,  DevilsTongue ,  Predator , and  Hermit . Lockdown Mode, when enabled, "hardens device defenses and strictly limits certain functionalities, sharply reducing the attack surface that potentially could be exploited by highly targeted mercenary spyware," Apple  said  in a statement. This includes blocking most message attachment types other than images and disabling link previews in Messages; rendering inoperative just-in-time ( JIT ) JavaScript compilation; removing support for shared albums in Photos; a