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Mathias Karlsson

Personal blog · avlidienbrunn.sesecurityweb

Mathias Karlsson writes Mathias {{2*2}}Karlsson, a personal blog at avlidienbrunn.se about security and web. Since 2014, 3 different Hacker News readers have linked it 3 times. No feed was found, so read it on the site itself.

No feed foundVisit the blog
3mentions?
3HN people?
2014–2016first – last linked?
Links on Hacker News per year · peak 2 in 2016

Too few sampled comments (2) to say how often HN recommends it.?

Why HN links it

HN readers link this blog for a write-up of a LastPass autofill exploit, where a crafted URL tricks the extension into filling credentials for another site. Commenters work through the technique and debate whether it is a real vulnerability.

Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.

What Hacker News says?

  1. Does someone understand the snippet? var fixedURL = URL.match(/^(.*:\/\/[^\/]+\/.*)@/); fixedURL && (url = url.substring(0, fixedURL[1].length) + url.substring(fixedURL[1].length).replace(/@/g, "%40")); It looks like: * fidexURL is whatever is after :// and up until the very last @ (greediness) * the second line fixedURL && is going to complete if fixedURL is not undefined * url = this fixedURL, then the rest of it…

    Comment linking /@twitter.com/@hehe.php

    on “LastPass autofill exploit”
  2. Submitted Bypassing AngularJS Sandbox and winning a $5,000 Google bug bounty as a story · 5 points

    HN discussion
  3. I don't quite follow. The author says that by entering the URL " http://avlidienbrunn.se/@twitter.com/@hehe.php" , the extension is fooled into autofilling as if the browser was on twitter.com. What's the difference with simply going to " http://twitter.com" ? This looks more like a bug than a vulnerability, what am I missing?

    Comment linking /@twitter.com/@hehe.php%22

    on “LastPass autofill exploit”

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