Microsoft's Meltdown Patch Made Windows 7 PCs More Insecure

Meltdown CPU vulnerability was bad, and Microsoft somehow made the flaw even worse on its Windows 7, allowing any unprivileged, user-level application to read content from and even write data to the operating system's kernel memory. For those unaware, Spectre and Meltdown were security flaws...

Windows 7 and Windows Server 2008 R2 x64 fail to protect kernel memory when the Microsoft update for meltdown is installed

Overview When the Microsoft update for meltdown is installed on a Windows 7 x64 or Windows Server 2008 R2 x64 system, an unprivileged process may be able to read and write the entire memory space available to the Windows kernel. Description The update that Microsoft has released for meltdown on x...

Bad Microsoft Meltdown Patch Made Some Windows Systems Less Secure

UPDATE Researcher Ulf Frisk has created a proof-of-concept exploit demonstrating that Microsoft’s January Patch Tuesday update made security matters worse when it comes to memory vulnerabilities associated with Intel’s CPU bug Meltdown. Frisk, a Swedish IT security expert, reported on Tuesday tha...

What Facebook’s Cambridge Analytica problem means for your data

As you may already know, there's been a security meltdown at Facebook, thanks to a company called Cambridge Analytica and Donald Trump. Facebook CEO Mark Zuckerberg insists it wasn't a breach, which is technically true. But that doesn't change the fact that the data of 50 million users was obtain...

KVA Shadow: Mitigating Meltdown on Windows

On January 3rd, 2018, Microsoft released an advisory and security updates that relate to a new class of discovered hardware vulnerabilities, termed speculative execution side channels, that affect the design methodology and implementation decisions behind many modern microprocessors. This post...

KVA Shadow: Mitigating Meltdown on Windows

On January 3rd, 2018, Microsoft released an advisory and security updates that relate to a new class of discovered hardware vulnerabilities, termed speculative execution side channels, that affect the design methodology and implementation decisions behind many modern microprocessors. This post...

A week in security (March 12 – March 18)

Last week on Malwarebytes Labs, we took a look at the inner workings of a fileless attack, explored what happened in a zero day ransomware attack aimed at South Koreans, gave you hints and tips for avoiding cold calls, and took a deep dive into the secretive world of GrayKey. Other news The Equif...

MGASA-2018-0172 Updated kernel packages fix security vulnerabilities

This kernel update is based on the upstream 4.14.25 and updates the KPTI mitigation for Meltdown CVE-2017-5754 on 32bit x86. It also adds ome optimizations and improvements to mitigate some of the slowdons caused by the Meltdown CVE-2017-5754 and Spectre, variant 2 CVE-2017-5715. Other security...

Updated kernel packages fix security vulnerabilities

This kernel update is based on the upstream 4.14.25 and updates the KPTI mitigation for Meltdown CVE-2017-5754 on 32bit x86. It also adds ome optimizations and improvements to mitigate some of the slowdons caused by the Meltdown CVE-2017-5754 and Spectre, variant 2 CVE-2017-5715. Other security...

Microsoft bug bounty program: $250k for reporting Meltdown & Spectre type flaws

By Waqas The bug bounty program will remain open until December 31st, 2018. This is a post from HackRead.com Read the original post: Microsoft bug bounty program: $250k for reporting Meltdown & Spectre type flaws...

New Microsoft Bug Bounty Program Looks To Squash The Next Spectre, Meltdown

In the wake of the Meltdown and Spectre flaws, Microsoft has rolled out a new bug bounty program targeting speculative execution side channel vulnerabilities. The limited time program is open until December 31, and offers up to $250,000 for identifying new categories of speculative execution...

This Week in Security News: The Cost of Being Unprepared

Welcome to our weekly roundup, where we share what you need to know about the cybersecurity news and events that happened over the past few days. This week, a Georgia bill has the potential to threaten security researchers, and a new report says 77 percent of businesses lack a cybersecurity...

Intel Details CPU ‘Virtual Fences’ Fix As Safeguard Against Spectre, Meltdown Flaws

Intel introduced hardware-based protections to its new chips to protect against the Spectre and Meltdown flaws that rocked the silicon industry when the vulnerabilities were made public in early 2018. Spectre and Meltdown, which account for three variants of a side-channel analysis security issue...

USN-3597-2: Linux kernel (HWE) vulnerabilities

USN-3597-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. USNS 3541-2 and 3523-2 provided mitigations for Spectre and Meltdown CVE-2017-5715,...

USN-3597-2 linux-hwe vulnerabilities

USN-3597-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. USNS 3541-2 and 3523-2 provided mitigations for Spectre and Meltdown CVE-2017-5715,...

USN-3597-1: Linux kernel vulnerabilities

USNS 3541-1 and 3523-1 provided mitigations for Spectre and Meltdown CVE-2017-5715, CVE-2017-5753, CVE-2017-5754 for the i386, amd64, and ppc64el architectures in Ubuntu 17.10. This update provides the corresponding mitigations for the arm64 architecture. Original advisory details: Jann Horn...

CentOS 6 : kernel (CESA-2018:0512) (Meltdown) (Spectre)

An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

FreeBSD : FreeBSD -- Speculative Execution Vulnerabilities (74daa370-2797-11e8-95ec-a4badb2f4699) (Meltdown) (Spectre)

A number of issues relating to speculative execution were found last year and publicly announced January 3rd. Two of these, known as Meltdown and Spectre V2, are addressed here. CVE-2017-5754 Meltdown - ------------------------ This issue relies on an affected CPU speculatively executing...

SUSE SLES11 Security Update : xen (SUSE-SU-2018:0678-1) (Meltdown) (Spectre)

This update for xen fixes several issues. These security issues were fixed : - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks bsc1074562, bsc1068032 - CVE-2018-5683: The vgadrawtext function...

Oracle Linux 6 : kernel (ELSA-2018-0512) (Meltdown) (Spectre)

From Red Hat Security Advisory 2018:0512 : An update for kernel is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, ...