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Allow RSA signatures using SHA-1 hash algorithm #3614

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merged 1 commit into from
May 26, 2022
Merged

Allow RSA signatures using SHA-1 hash algorithm #3614

merged 1 commit into from
May 26, 2022

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dimbleby
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This was disabled by default at openssh 8.8 but is still used by some git implementations eg Azure DevOps

Fixes #3611

Per that issue, would welcome a release containing this fix - flux 1.25.0 is meanwhile not usable for us.

This was disabled by default at openssh 8.8 but is still used by some
git implementations eg Azure DevOps

Signed-off-by: David Hotham <[email protected]>
@kingdonb
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I will take your word for it that our images before 1.25.0 did not have this regression, and this is the correct fix. I have not been using either Azure DevOps or Google Code Repository so I haven't seen this behavior in any of my testing.

I think that SHA-1 was deprecated for a reason, but in Flux v1 there is a backwards compatibility guarantee, we should not have broken this. I think we should find a way with gitsrv to emulate the described SHA-1 signature behavior and reproduce the issue in a test, so that we can guarantee it does not reoccur in future updates. 👍 Thanks for the contribution @dimbleby !

@kingdonb kingdonb requested review from pjbgf and kingdonb May 26, 2022 12:07
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LGTM

@kingdonb kingdonb merged commit 4785fbb into fluxcd:master May 26, 2022
@dimbleby dimbleby deleted the allow-rsa-sha-1 branch May 26, 2022 12:42
@kingdonb kingdonb mentioned this pull request May 26, 2022
@kingdonb kingdonb added this to the 1.25.2 milestone May 26, 2022
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Git cloning over SSH broken starting from version 1.25.0
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