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YouTube의 오류 500 페이지 디코딩

codestyles 2020. 11. 12. 08:14
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YouTube의 오류 500 페이지 디코딩


이것은 YouTube의 500 페이지입니다. 누구든지이 정보를 해독 할 수 있습니까?

<p>500 Internal Server Error<p>

Sorry, something went wrong.
<p>A team of highly trained monkeys has been dispatched to deal with this situation.<p>

If you see them, show them this information:
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(출처 : HN에 대한이 게시물 )


(urlsafe-) base64 Blob에 포함 된 디버그 정보는 암호화되었을 가능성이 있습니다.

Google의 관점에서 생각해보십시오. 개발자가 상황을 디버그하는 데 도움이되도록 스택 추적, http 요청의 관련 헤더 및 사용자 세션의 내부 상태를 표시 할 수 있습니다. 반면에 모든 정보에는 일반 대중이 보지 않기를 원하거나 사용자가 공개 지원 포럼에 복사하여 붙여 넣으면 위험 할 수있는 민감한 정보가 포함될 수 있습니다.

형식을 추측하면 상상할 수 있습니다.

  • 암호화에 사용되는 키의 공개 식별자 (서버가 다른 키를 사용할 수 있음)
  • The debug data encrypted using an authenticated encryption scheme
  • Additional data for error correction when OCR has to be used

For statistical analysis of the format it would be interesting to sample a lot of these error messages and see if some parts of the message are less random than you would expect from encrypted data (symmetrical encrypted data should follow a uniform distribution).


It looks like you are not the only one who is looking for some secret messages in YouTube error page. It seems that you can decode it using Base64.

Here is how:

http://www.cambus.net/decoding-youtube-http-error-500-message/

In a nutshell:

Sadly, contrary to my expectations, there doesn't seem to be any hidden message… Screw you, highly trained monkeys!

I guess it is just another Easter Egg similar to 'Goats Teleported' performance counter Google Chrome had:

https://plus.google.com/+RobertPitt/posts/PrqAX3kVapn

But I guess unless you look like this, you can't be 100% sure. OMG Monkeys!


Imho this is all about customer care.

Actually there would be no need to send the error/debug message to the customer, because, I guess, it's already handled internally.

So:

  • why do we see this?
  • and why do they crypt it?
  • and is there really no hidden message for us?

Although the error might be handled and resolved internally, this does not necessarily satisfy a customer, who is not able to use the product. They pretty much do crypt by a good reason as this debug message might reveal more than a typical admin is used to. And also there is no need to hide a message for us. Why? Because we NEVER stop until we find something.

I think:

  • internally the error is dealt with
  • external users might have something in hand to tell a technician if necessary and in return can get an approximation of ongoing problem

All in all nothing special about it and i think linking e.g. to the inf. monkey theorem is a bit overspectulated...


It's entirely possible that this is random padding to avoid the "friendly" IE error pages that show if your error page does not contain more than 512 bytes of HTML. It would be base64 encoded if it were simply random bytes.


Error 500 means google has a problem which can not resolve. So when reporting a bug the most important thing is to prepare reproduction steps. So I tried to find an answer of the question "When this happens?"

I found this post in reddit: https://www.reddit.com/r/youtube/comments/40k858/is_youtube_giving_you_500_internal_server_errors/?utm_source=amp&utm_medium=comment_list

As resume:

  • It happens on desktops (www...), it works ok on mobile version (m...)

  • It happens for authenticated users. For anonymous users is working fine.

  • The problem is resolved after cookies are cleaned.

So I would give a direction: try to find the key in the session cookie. I hope my 2 cents will help.

참고URL : https://stackoverflow.com/questions/21681084/decoding-youtubes-error-500-page

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