openssl / openssl/openssl

The handling of the CRL Number field by OpenSSL

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#27,085 3 comments 0 reactions 1 assignee View on GitHub

@onepeople158 is already working on this.

Since Sep 9, 2026.

backlog fix branch: master help wanted triaged: feature
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Description

Version:
OpenSSL 3.4.1 11 Feb 2025 (Library: OpenSSL 3.4.1 11 Feb 2025)

Describtion:
Hello Developer, I have a CRL file with a CRL Number value of -36. According to RFC5280, the CRL Number value should be a non-negative integer, but OpenSSL successfully printed this CRL without any errors.

Command:
openssl crl -inform DER -in crl_file_test_.der -text

Test case:

crl_file_test_.zip

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