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The Hacker News - Cybersecurity News and Analysis: macos exploit

Google Discloses Unpatched 'High-Severity' Flaw in Apple macOS Kernel

Google Discloses Unpatched 'High-Severity' Flaw in Apple macOS Kernel

March 04, 2019Mohit Kumar
Cybersecurity researcher at Google's Project Zero division has publicly disclosed details and proof-of-concept exploit of a high-severity security vulnerability in macOS operating system after Apple failed to release a patch within 90 days of being notified. Discovered by Project Zero researcher Jann Horn and demonstrated by Ian Beer, the vulnerability resides in the way macOS XNU kernel allows an attacker to manipulate filesystem images without informing the operating system. The flaw could eventually allow an attacker or a malicious program to bypass the copy-on-write (COW) functionality to cause unexpected changes in the memory shared between processes, leading to memory corruption attacks. Copy-On-Write, also referred to as COW, is a resource-management optimization strategy used in computer programming. In general, if any process (destination) requires a file or data that is already in the memory but created by another process (source), both processes can share the
ex-NSA Hacker Discloses macOS Mojave 10.14 Zero-Day Vulnerability

ex-NSA Hacker Discloses macOS Mojave 10.14 Zero-Day Vulnerability

September 27, 2018Swati Khandelwal
The same day Apple released its latest macOS Mojave operating system, a security researcher demonstrated a potential way to bypass new privacy implementations in macOS using just a few lines of code and access sensitive user data. On Monday, Apple started rolling out its new macOS Mojave 10.14 operating system update to its users, which includes a number of new privacy and security controls, including authorization prompts. Mojave 10.14 now pops up authorization prompts that require direct and real user interaction before any unprivileged third-party application can tap into users' sensitive information, such as address books, location data, message archives, Mail, and photos. Patrick Wardle, an ex-NSA hacker and now chief research officer at Digita Security, discovered a zero-day flaw that could allow an attacker to bypass authorization prompts and access users' personal information by using an unprivileged app. Wardle tweeted a video Monday showing how he was able
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