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src: bump OpenSSL, EKU check #78

Merged
merged 5 commits into from
Jul 28, 2023
Merged

src: bump OpenSSL, EKU check #78

merged 5 commits into from
Jul 28, 2023

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woodruffw
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We now use OpenSSL 3.0 or higher.

This also (partially) fixes a gap in our Authenticode compliance: we now reject signer certificates that lack the codeSigning EKU. This is a superset of Authenticode's specified behavior, as we lack the context (a full chain) needed to accept some certificates that don't have the codeSigning EKU. In practice, this shouldn't be a concern: most Authenticode CAs should be issuing EE certs with this EKU.

Signed-off-by: William Woodruff <william@trailofbits.com>
@woodruffw woodruffw added the C:uthenticode The core uthenticode library label May 15, 2023
@woodruffw woodruffw self-assigned this May 15, 2023
@woodruffw woodruffw requested a review from ret2libc May 15, 2023 21:15
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woodruffw commented May 15, 2023

N.B.: This needs a unit test before merging.

@woodruffw woodruffw marked this pull request as draft May 15, 2023 21:20
Signed-off-by: William Woodruff <william@trailofbits.com>
Signed-off-by: William Woodruff <william@trailofbits.com>
@woodruffw woodruffw marked this pull request as ready for review July 24, 2023 16:40
@woodruffw woodruffw merged commit caeb1eb into master Jul 28, 2023
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@woodruffw woodruffw deleted the ww/eku-check branch July 28, 2023 20:44
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