[Python-Dev] Re: [CVE-2022-37454] SHA3 vulnerability and upcoming Python patches for 3.7 - 3.10

2022年11月07日 15:01:45 -0800

On 07Nov2022 12:26, Gregory P. Smith <[email protected]> wrote:
I personally didn't feel this one was urgent enough to ask anyone to spend
time doing an emergency security release as triggering the crash requires
someone sending a multi-gigabyte amount of data into a sha3 hash function
in a single .update() method call. That seems like a rare code pattern. How
many applications ever do that vs doing I/O in smaller chunks with more
frequent .update() calls?
As it happens I'm doing some work for a media archiving company and we're looking at recording checksums for archived files. I _may_ well be choosing to mmap a file and calling .update() on the mapping in one go.
That said, that's (a) niche and (b) not even written yet.
I think I'd still agree that this might be a nonurgent fix (haven't read the CVE properly yet).
Cheers,
Cameron Simpson <[email protected]>
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