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Flaws in WhatsApp’s desktop app allowed far flung get right of entry to to information

Facebook has patched a WhatsApp bug that would let someone read files off your desktop,

Amplify / Fb has patched a WhatsApp worm that may let anyone learn information off your desktop, (credit score: NurPhoto/Getty Photographs)

Fb has issued a safety advisory for a flaw in WhatsApp Desktop that would permit an attacker to make use of cross-site scripting assaults and browse the information on MacOS or Home windows PCs through the usage of a specifically crafted textual content message. The attacker may retrieve the contents of information at the laptop at the different finish of a WhatsApp textual content message and doubtlessly do different illicit issues.

The flaw, found out through researcher Gal Weizman at PerimeterX, is a results of a weak point in how WhatsApp’s desktop had been applied the usage of the Electron instrument framework, which has had important safety problems with its personal up to now. Electron permits builders to create cross-platform packages according to Internet and browser applied sciences however is simplest as safe because the elements builders deploy with their Electron apps.

Weizman first discovered cross-site scripting vulnerabilities in WhatsApp in 2017, when he discovered he may tamper with the metadata of messages, craft bogus preview banners for Internet hyperlinks, and create URLs that would cover adversarial intent inside WhatsApp messages. However as he endured his explorations into the WhatsApp consumer, he discovered that he may inject JavaScript code into messages that may run inside WhatsApp Desktop—after which acquire get right of entry to to the native report device the usage of the JavaScript Fetch API.

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