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crypto/ecdsa: P521 ecdsa.Verify panics with malformed message [1.21 backport] #60745

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gopherbot opened this issue Jun 12, 2023 · 1 comment

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CherryPickCandidate

gopherbot commented Jun 12, 2023

@FiloSottile requested issue #60741 to be considered for backport to the next 1.21 minor release.

@gopherbot please open a Go 1.20 backport.

I think this doesn't have security impact because ECDSA hashes are not attacker-controlled and no one has a 528 hash laying around, but it's a spec deviation leading to a panic, so might as well fix it in Go 1.21 and backport it.

gopherbot added the CherryPickCandidate label

gopherbot mentioned this issue

crypto/ecdsa: P521 ecdsa.Verify panics with malformed message #60741

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Contributor

FiloSottile commented Jun 12, 2023

We are still in time to fix this for Go 1.21, @gopherbot just misread "Go 1.21" in the second paragraph.

FiloSottile closed this as completed

dmitshur closed this as not planned

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