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verify_cert: check name constraints after sig. validation #278

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wants to merge 2 commits into from
Closed

verify_cert: check name constraints after sig. validation #278

wants to merge 2 commits into from

Commits on Sep 19, 2023

  1. verify_cert: check name constraints after sig. validation 

    Prior to this commit parsing and processing certificate name constraints
was done before validating a chain of signatures to a known trust
anchor. This increases the attack surface of these features, allowing an
adversary to force webpki to process name constraints on a crafted
certificate without needing to have that certificate issued by a trusted
entity.

This commit moves the parsing and processing of name constraints to
after building and verifying the chain of signatures to reduce the
potential for mischief.
    @cpu
    cpu committed Sep 19, 2023
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  2. signed_data: fix code block missing close marker

    @cpu
    cpu committed Sep 19, 2023
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    5bf67ff View commit details
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