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Microsoft reviews new Home windows vulnerability

Microsoft reported a “essential” safety vulnerability Monday that might have an effect on thousands and thousands of Home windows customers. The essential label is the very best severity ranking issued to potential threats.

The flaw resides within the Adobe Sort Supervisor Library, which controls how fonts are rendered and displayed.

Hackers can trick customers into opening a doc containing hidden malicious content material. The assault doesn’t require the consumer to click on on a hyperlink. Merely viewing the doc in a preview display can set off the assault.

The is discovered on all current variations of Home windows, together with variations 7, eight and 10, and Home windows Server.

In the intervening time, there isn’t a repair. Till an answer is discovered, Microsoft recommends three workarounds. They embody disabling the Preview and Particulars panes in Home windows explorer, disabling WebClient service and disabling the ATMFD.DLL file within the registry. Alternately, renaming the ATMFD.DLL file will defend the performance of this system.

However Microsoft cautions that renaming the .DLL file might disrupt performance of some packages that depend on embedded fonts or OpenType fonts. Additionally they repeated a regularly issued warning that making incorrect modifications to Home windows registry settings, or making any typos in directions, exposes customers to system crashes which will require a full Home windows reinstallation.

Disabling the WebClient service will nonetheless depart open the opportunity of hackers operating packages on the focused pc or community. However customers shall be prompted for affirmation earlier than a program is opened, alerting customers to suspicious exercise.

The Microsoft advisory referred to “restricted, focused assaults,” however didn’t specify who they consider is chargeable for this newest assault nor the quantity or frequency of assaults. Observers word that the phrase “restricted, focused assaults” is shorthand for digital assaults performed by hackers engaged on behalf of international governments.

The Microsoft advisory posted Monday is titled “Sort 1 Font Parsing Distant Code Execution Vulnerability.” Particulars could also be discovered at … 200006#march-23-flaw.

The advisory states: “There are a number of methods an attacker may exploit the vulnerability, resembling convincing a consumer to open a specifically crafted doc or viewing it within the Home windows Preview pane.”

It continues: “Microsoft is conscious of this vulnerability and dealing on a repair. Updates that handle safety vulnerabilities in Microsoft software program are sometimes launched on Replace Tuesday, the second Tuesday of every month. This predictable schedule permits for accomplice high quality assurance and IT planning, which helps keep the Home windows ecosystem as a dependable, safe alternative for our prospects.”

NSA finds major security flaw in Windows 10, free fix issued

Extra data: … 200006#march-23-flaw

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Microsoft reviews new Home windows vulnerability (2020, March 24)
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