Security News
AMD last week said it was preparing patches for a vulnerability affecting the System Management Mode of the Unified Extensible Firmware Interface shipped with systems that use certain notebook and embedded processors. Discovered by security researcher Danny Odler in AMD's Mini PC and tracked as CVE-2020-12890, the vulnerability is one of the three issues reported in April, allowing an attacker to manipulate secure firmware and execute arbitrary code while avoiding detection.
In three posts marked urgent to the Linux kernel mailing list on Tuesday, Anthony Steinhauser points out problems with countermeasures put in place to block Spectre vulnerabilities in modern Intel and AMD x86 microprocessors that perform speculative execution. The Spectre family of flaws involve making a target system speculate - perform an operation it may not need - in order to expose confidential data so an attacker can obtain it through an unprotected side channel.
Modern Intel and AMD processors are susceptible to a new form of side-channel attack that makes flush-based cache attacks resilient to system noise, newly published research shared with The Hacker News has revealed. It also works seamlessly against non-Linux Operating Systems, like macOS. "Like any other cache attacks, flush based cache attacks rely on the calibration of cache latency," Biswabandan Panda, assistant professor at IIT Kanpur, told The Hacker News.
Modern Intel and AMD processors are susceptible to a new form of side-channel attack that makes flush-based cache attacks resilient to system noise, newly published research shared with The Hacker News has revealed. It also works seamlessly against non-Linux Operating Systems, like macOS. "Like any other cache attacks, flush based cache attacks rely on the calibration of cache latency," Biswabandan Panda, assistant professor at IIT Kanpur, told The Hacker News.
On Wednesday, AMD confirmed intellectual property related to its graphics processors was stolen last year, though insisted the leaked files will not damage its business nor compromise product security. Two days ago, AMD issued two Digital Millennium Copyright Act takedown notices to GitHub, directing the Microsoft-owned code storage biz to remove five repositories - an original repo and four copies - that contained confidential internal hardware source code for its Navi family of GPUs.
AMD has confirmed that a hacker has stolen files related to some of its graphics products, but the company says it's not too concerned about the impact of the leak. A hacker who uses the online moniker "Palesa" claims to have obtained source code files related to several AMD graphics processing units, including the Navi 10 architecture, which is used in some Radeon RX 5000-series graphics cards, the upcoming Navi 21, and Arden.
AMD processors sold between 2011 and 2019 are vulnerable to two side-channel attacks that can extract kernel data and secrets, according to a new research paper. In a paper [PDF] titled, "Take A Way: Exploring the Security Implications of AMD's Cache Way Predictors," six boffins - Moritz Lipp, Vedad Hadžić, Michael Schwarz, and Daniel Gruss, Clémentine Maurice, and Arthur Perais - explain how they reverse-engineered AMD's L1D cache way predictor to expose sensitive data in memory.
AMD processors sold between 2011 and 2019 are vulnerable to two side-channel attacks that can extract kernel data and secrets, according to a new research paper. In a paper [PDF] titled, "Take A Way: Exploring the Security Implications of AMD's Cache Way Predictors," six boffins - Moritz Lipp, Vedad Hadžić, Michael Schwarz, and Daniel Gruss, Clémentine Maurice, and Arthur Perais - explain how they reverse-engineered AMD's L1D cache way predictor to expose sensitive data in memory.
AMD is seeking to downplay side-channel attacks that can leak potentially sensitive data from its processors released between 2011 and 2019. AMD this weekend said it does not believe these are "New speculation-based attacks" and did not offer any mitigations: "We are aware of a new white paper that claims potential security exploits in AMD CPUs, whereby a malicious actor could manipulate a cache-related feature to potentially transmit user data in an unintended way," said AMD in a Saturday advisory.
AMD is seeking to downplay side-channel attacks that can leak potentially sensitive data from its processors released between 2011 and 2019. AMD this weekend said it does not believe these are "New speculation-based attacks" and did not offer any mitigations: "We are aware of a new white paper that claims potential security exploits in AMD CPUs, whereby a malicious actor could manipulate a cache-related feature to potentially transmit user data in an unintended way," said AMD in a Saturday advisory.