Posts Tagged: Intel


10
Jan 18

Microsoft’s Jan. 2018 Patch Tuesday Lowdown

Microsoft on Tuesday released 14 security updates, including fixes for the Spectre and Meltdown flaws detailed last week, as well as a zero-day vulnerability in Microsoft Office that is being exploited in the wild. Separately, Adobe pushed a security update to its Flash Player software.

Last week’s story, Scary Chip Flaws Raise Spectre of Meltdown, sought to explain the gravity of these two security flaws present in most modern computers, smartphones, tablets and mobile devices. The bugs are thought to be mainly exploitable in chips made by Intel and ARM, but researchers said it was possible they also could be leveraged to steal data from computers with chips made by AMD.

By the time that story had published, Microsoft had already begun shipping an emergency update to address the flaws, but many readers complained that their PCs experienced the dreaded “blue screen of death” (BSOD) after applying the update. Microsoft warned that the BSOD problems were attributable to many antivirus programs not yet updating their software to play nice with the security updates.

On Tuesday, Microsoft said it was suspending the patches for computers running AMD chipsets.

“After investigating, Microsoft determined that some AMD chipsets do not conform to the documentation previously provided to Microsoft to develop the Windows operating system mitigations to protect against the chipset vulnerabilities known as Spectre and Meltdown,” the company said in a notice posted to its support site.

“To prevent AMD customers from getting into an unbootable state, Microsoft has temporarily paused sending the following Windows operating system updates to devices that have impacted AMD processors,” the company continued. “Microsoft is working with AMD to resolve this issue and resume Windows OS security updates to the affected AMD devices via Windows Update and WSUS as soon as possible.”

In short, if you’re running Windows on a computer powered by an AMD, you’re not going to be offered the Spectre/Meltdown fixes for now. Not sure whether your computer has an Intel or AMD chip? Most modern computers display this information (albeit very briefly) when the computer first starts up, before the Windows logo appears on the screen.

Here’s another way. From within Windows, users can find this information by pressing the Windows key on the keyboard and the “Pause” key at the same time, which should open the System Properties feature. The chip maker will be displayed next to the “Processor:” listing on that page.

Microsoft also on Tuesday provided more information about the potential performance impact on Windows computers after installing the Spectre/Meltdown updates. To summarize, Microsoft said Windows 7, 8.1 and 10 users on older chips (circa 2015 or older), as well as Windows server users on any silicon, are likely to notice a slowdown of their computer after applying this update.

Any readers who experience a BSOD after applying January’s batch of updates may be able to get help from Microsoft’s site: Here are the corresponding help pages for Windows 7, Windows 8.1 and Windows 10 users.

As evidenced by this debacle, it’s a good idea to get in the habit of backing up your system on a regular basis. I typically do this at least once a month — but especially right before installing any updates from Microsoft.  Continue reading →


5
Jan 18

Scary Chip Flaws Raise Spectre of Meltdown

Apple, Google, Microsoft and other tech giants have released updates for a pair of serious security flaws present in most modern computers, smartphones, tablets and mobile devices. Here’s a brief rundown on the threat and what you can do to protect your devices.

At issue are two different vulnerabilities, dubbed “Meltdown” and “Spectre,” that were independently discovered and reported by security researchers at Cyberus Technology, Google, and the Graz University of Technology. The details behind these bugs are extraordinarily technical, but a Web site established to help explain the vulnerabilities sums them up well enough:

“These hardware bugs allow programs to steal data which is currently processed on the computer. While programs are typically not permitted to read data from other programs, a malicious program can exploit Meltdown and Spectre to get hold of secrets stored in the memory of other running programs. This might include your passwords stored in a password manager or browser, your personal photos, emails, instant messages and even business-critical documents.”

“Meltdown and Spectre work on personal computers, mobile devices, and in the cloud. Depending on the cloud provider’s infrastructure, it might be possible to steal data from other customers.”

The Meltdown bug affects every Intel processor shipped since 1995 (with the exception of Intel Itanium and Intel Atom before 2013), although researchers said the flaw could impact other chip makers. Spectre is a far more wide-ranging and troublesome flaw, impacting desktops, laptops, cloud servers and smartphones from a variety of vendors. However, according to Google researchers, Spectre also is considerably more difficult to exploit.

In short, if it has a computer chip in it, it’s likely affected by one or both of the flaws. For now, there don’t appear to be any signs that attackers are exploiting either to steal data from users. But researchers warn that the weaknesses could be exploited via Javascript — meaning it might not be long before we see attacks that leverage the vulnerabilities being stitched into hacked or malicious Web sites.

Microsoft this week released emergency updates to address Meltdown and Spectre in its various Windows operating systems. But the software giant reports that the updates aren’t playing nice with many antivirus products; the fix apparently is causing the dreaded “blue screen of death” (BSOD) for some antivirus users. In response, Microsoft has asked antivirus vendors who have updated their products to avoid the BSOD crash issue to install a special key in the Windows registry. That way, Windows Update can tell whether it’s safe to download and install the patch. Continue reading →