MSC1921: Support cancelling 3pid validation sessions #1921
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turt2live
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| believed by the author that the additional security of ensuring the requester has permission to actually | ||
| cancel the session is more worthwhile than trying to fail fast. | ||
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| Servers should also be aware of a potential resource exhaustion vector where an attacker requests a token and |
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Definitely something that should happen during token creation, but I wouldn't rate limit cancelToken especially harshly.
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Fixes element-hq/element-web#6560 Would be better improved by matrix-org/matrix-spec-proposals#1921 or similar in the future.
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Is this still needed? Can we not just start another validation session and let the previous one eventually expire? |
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There's a whole introduction that explains why this is needed and why letting them expire naturally is insufficient. This is still needed. |
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As mentioned in the introduction, this was written in the context of working on element-hq/element-web#6560.