In a blog post shared by ZDNet, security researcher Vishal Bharad claims that he found a bug that would have allowed a hacker to inject a virus or malicious script onto Apple's iCloud website.
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According to Bharad, the vulnerability consisted of creating a Pages or Keynote document on the iCloud website with the name field containing the XSS payload. Sharing the document with another user, creating a change, saving, and then clicking "Browse All Versions" under Settings would have triggered the XSS payload.
Given the vulnerability revolved around the iCloud website, it's not linked to a recent software update and has reportedly been patched by Apple server-side. Bharad says he submitted the issue to Apple on August 7, 2020, and received a $5,000 bounty on October 9, 2020. We've reached out to Apple for comment and we'll update if we hear back.
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