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0:00
S… Speaker 1 (v09044g40000c40tatrc77u3vqm6u500)
What kind of security flaw do you think qualifies for a critical severity and a $20,000 reward from GitLab? Let's walk through the vulnerability. So you upload an image to GitLab, and it goes to a special tool to remove tags. But this tool doesn't pay attention to the extension. It pays attention to the contents of the file. So it could be a .jpg file.
0:20
S… Speaker 1 (v09044g40000c40tatrc77u3vqm6u500)
with something totally different inside. So the researcher put code in the file and he found that if he crafted it just right, he could get that code to execute. In cybersecurity, we call this kind of vulnerability RCE or remote code execution. Why is it so good? Because then you can craft some commands that open up a doorway to the internet, which we call the reverse shell. RCE on production, 20 grand, sometimes more. Awesome.

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