this post was submitted on 06 Sep 2023
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Password-stealing Chrome extension smuggled on to Web Store (www.malwarebytes.com)
submitted 1 year ago by [email protected] to c/[email protected]
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cross-posted from [email protected]

Original source: https://arxiv.org/pdf/2308.16321.pdf

  • Researchers at the University of Wisconsin–Madison found that Chrome browser extensions can still steal passwords, despite compliance with Chrome's latest security standard, Manifest V3.
  • A proof of concept extension successfully passed the Chrome Web Store review process, demonstrating the vulnerability.
  • The core issue lies in the extensions' full access to the Document Object Model (DOM) of web pages, allowing them to interact with text input fields like passwords.
  • Analysis of existing extensions showed that 12.5% had the permissions to exploit this vulnerability, identifying 190 extensions that directly access password fields.
  • Researchers propose two fixes: a JavaScript library for websites to block unwanted access to password fields, and a browser-level alert system for password field interactions.
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[–] [email protected] 41 points 1 year ago

I use Firefox but this is kind of silly. The real advice is use very few addons. On Firefox I use only ublock.