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Signature DoesNotMatch

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Articles by Signature DoesNotMatch

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By Blue Byte, Signature DoesNotMatch
| DEV Community
Imagine that during an engagement you come across a static website, with only an image on the home page and standard files from a frontend framework. You have already reviewed them and found no sensitive information, no route or anything relevant. You have also found (maybe while analyzing HTTP headers) that the server is behind the Cloudfront CDN. End of the line, right? Or maybe not... Also imagine that, by intuition, you suspect that there is an AWS S3 bucket behind the CDN, serving static files.
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CloudFront and S3: SignatureDoesNotMatch , the request signature we calculated does not match the signature you provided

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By Signature DoesNotMatch
| DEV Community
Maybe you might have got the below error when you have configured CloudFront distribution like it happened to me. <Error> <Code>SignatureDoesNotMatch</Code> <Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message> </Error> If so, maybe like me you might have configured the custom origin request policies and have allowed All viewers headers like the below.
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