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Plus: Micro-op CPU caches abused to leak data, and more Share Copy In Brief Apple on Monday patched security flaws in its software said to have been exploited in the wild by miscreants to hijack gear. WebKit, fixed in macOS Big Sur 11.3.1, can be tricked into executing arbitrary code by processing malicious web content – a bad webpage can take over the browser, in other words. Apple is aware of a report that this issue may have been actively exploited, it said in its advisory. Specifically, there are two bugs: memory corruption flaw CVE-2021-30665, which was found by a trio at 360 ATA, and an integer overflow issue CVE-2021-30663, credited to an anonymous researcher. The same holes are fixed in iOS 14.5.1 and iPadOS 14.5.1, and the memory corruption problem is addressed in watchOS 7.4.1. ....
Intel, Researchers Debate Whether New Spectre-Type Vulnerabilities Exist Intel, Researchers Debate Whether New Spectre-Type Vulnerabilities Exist By Joel Hruska on May 4, 2021 at 4:23 pm This site may earn affiliate commissions from the links on this page. Terms of use. Over the past three days, reports of new Spectre-class attacks emerged that supposedly break all previous speculative execution patches and require performance-crippling mitigation techniques. There’s just one problem: Intel and the researchers fundamentally disagree as to whether a flaw exists at all. The research team from the University of Virginia has written a paper arguing that there are catastrophic flaws in the way AMD and Intel currently implement micro-op caches that allow them to leak data under certain circumstances. Both Zen 2 and Skylake-class architectures are said to be vulnerable; the paper does not reference any testing done on Ice Lake, Tiger Lake, Rocket L ....