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A Programmer's Blog. Using Facebook Notes to DDoS any website. On April 20, 2014. Facebook Notes allows users to include img tags. Whenever a img tag is used, Facebook crawls the image from the external server and caches it. Facebook will only cache the image once however using random get parameters the cache can be by-passed and the feature can be abused to cause a huge HTTP GET flood. Steps to re-create the bug as reported to Facebook Bug Bounty on March 03, 2014. Number of Facebook Servers: 127. Of co...

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A Programmer's Blog. Using Facebook Notes to DDoS any website. On April 20, 2014. Facebook Notes allows users to include img tags. Whenever a img tag is used, Facebook crawls the image from the external server and caches it. Facebook will only cache the image once however using random get parameters the cache can be by-passed and the feature can be abused to cause a huge HTTP GET flood. Steps to re-create the bug as reported to Facebook Bug Bounty on March 03, 2014. Number of Facebook Servers: 127. Of co...

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A Programmer's Blog | chr13.com Reviews

https://chr13.com

A Programmer's Blog. Using Facebook Notes to DDoS any website. On April 20, 2014. Facebook Notes allows users to include img tags. Whenever a img tag is used, Facebook crawls the image from the external server and caches it. Facebook will only cache the image once however using random get parameters the cache can be by-passed and the feature can be abused to cause a huge HTTP GET flood. Steps to re-create the bug as reported to Facebook Bug Bounty on March 03, 2014. Number of Facebook Servers: 127. Of co...

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chr13.com

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April | 2014 | A Programmer's Blog

http://chr13.com/2014/04

A Programmer's Blog. Monthly Archives: April 2014. Using Facebook Notes to DDoS any website. On April 20, 2014. Facebook Notes allows users to include img tags. Whenever a img tag is used, Facebook crawls the image from the external server and caches it. Facebook will only cache the image once however using random get parameters the cache can be by-passed and the feature can be abused to cause a huge HTTP GET flood. Steps to re-create the bug as reported to Facebook Bug Bounty on March 03, 2014. Of cours...

2

Using Facebook Notes to DDoS any website | A Programmer's Blog

http://chr13.com/2014/04/20/using-facebook-notes-to-ddos-any-website

A Programmer's Blog. Using Facebook Notes to DDoS any website. On April 20, 2014. Facebook Notes allows users to include img tags. Whenever a img tag is used, Facebook crawls the image from the external server and caches it. Facebook will only cache the image once however using random get parameters the cache can be by-passed and the feature can be abused to cause a huge HTTP GET flood. Steps to re-create the bug as reported to Facebook Bug Bounty on March 03, 2014. Number of Facebook Servers: 127. Of co...

3

Using Google to DDoS any website | A Programmer's Blog

http://chr13.com/2014/03/10/using-google-to-ddos-any-website

A Programmer's Blog. Using Google to DDoS any website. On March 10, 2014. Google uses its FeedFetcher crawler to cache anything that is put inside =image(“link”) in the spreadsheet. If we put =image(“http:/ example.com/image.jpg”). In one of the cells of Google spreadsheet, Google will send the FeedFetcher crawler to grab the image and cache it to display. R=0) =image(http:/ targetname/file.pdf? R=1) =image(http:/ targetname/file.pdf? R=2) =image(http:/ targetname/file.pdf? Here, the attacker does not ne...

4

March | 2014 | A Programmer's Blog

http://chr13.com/2014/03

A Programmer's Blog. Monthly Archives: March 2014. Using Google to DDoS any website. On March 10, 2014. Google uses its FeedFetcher crawler to cache anything that is put inside =image(“link”) in the spreadsheet. If we put =image(“http:/ example.com/image.jpg”). In one of the cells of Google spreadsheet, Google will send the FeedFetcher crawler to grab the image and cache it to display. R=0) =image(http:/ targetname/file.pdf? R=1) =image(http:/ targetname/file.pdf? Here, the attacker does not need a huge ...

5

About me | A Programmer's Blog

http://chr13.com/about-me

A Programmer's Blog. I am a software enthusiast who loves solving problems. Although not much of a blogger, I will be updating this blog occasionally if I find anything interesting. Security, Databases, Data mining, Machine learning. Using Facebook Notes to DDoS any website. Using Google to DDoS any website.

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A Programmer's Blog

A Programmer's Blog. Using Facebook Notes to DDoS any website. On April 20, 2014. Facebook Notes allows users to include img tags. Whenever a img tag is used, Facebook crawls the image from the external server and caches it. Facebook will only cache the image once however using random get parameters the cache can be by-passed and the feature can be abused to cause a huge HTTP GET flood. Steps to re-create the bug as reported to Facebook Bug Bounty on March 03, 2014. Number of Facebook Servers: 127. Of co...

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