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Tag: prototype pollution

Exploiting prototype pollution – RCE in Kibana (CVE-2019-7609)

Michał Bentkowski | October 30, 2019October 30, 2019 | Research

Prototype pollution is a vulnerability that is specific to programming languages with prototype-based inheritance (the most common one being JavaScript). While the bug is well-known for some time now, it lacks practical examples of exploitation. In this post, I’m showing how to exploit it to achieve Remote Code Execution in Kibana.

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Post of the month

18 Nov 2019

XSS in GMail’s AMP4Email via DOM Clobbering

Michał Wnękowicz

Security Research Manager

For this month I propose: "XSS in GMail's AMP4Email via DOM Clobbering" which was nominated to "Top 10 web hacking techniques of 2019" by Portswigger.

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Recent Posts

  • Helping secure DOMPurify (part 1) December 21, 2020
  • Mutation XSS via namespace confusion – DOMPurify < 2.0.17 bypass September 21, 2020
  • Prototype pollution – and bypassing client-side HTML sanitizers August 18, 2020
  • HTML sanitization bypass in Ruby Sanitize < 5.2.1 July 22, 2020
  • Marginwidth/marginheight – the unexpected cross-origin communication channel July 13, 2020
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