Certificate validation issue

[avzuquete]

Hi, I'm using certvalidator 0.11.1 to validate a certificate with a chain.

The validation fails in method verify_crl, with the following traceback:

File "/usr/local/lib/python3.8/site-packages/certvalidator/init.py", line 193, in validate_usage self._validate_path() File "/usr/local/lib/python3.8/site-packages/certvalidator/init.py", line 121, in _validate_path validate_path(self._context, candidate_path) File "/usr/local/lib/python3.8/site-packages/certvalidator/validate.py", line 50, in validate_path return _validate_path(validation_context, path) File "/usr/local/lib/python3.8/site-packages/certvalidator/validate.py", line 402, in _validate_path verify_crl( File "/usr/local/lib/python3.8/site-packages/certvalidator/validate.py", line 1243, in verify_crl if isinstance(distribution_point['crl_issuer'], x509.GeneralNames): TypeError: string indices must be integers

Apparently one is trying to index a string with a string ...

Attached goes a series of test certificates with a target certificate (sig.der) and its certification chain. I got the error when checking the validity of sig.der. sig.zip

[avzuquete]

Certificates in DER and PEM formats. And the correct chain, this time (there was a wrong certtificate in the previous ZIP). sig.zip

[avzuquete]

Certificates inline, in PEM format. Leaf first, root last, others following chain.

-----BEGIN CERTIFICATE----- MIIJUDCCBzigAwIBAgIIe6zL5nB/MCswDQYJKoZIhvcNAQELBQAwgcExCzAJBgNV BAYTAlBUMTMwMQYDVQQKDCpJbnN0aXR1dG8gZG9zIFJlZ2lzdG9zIGUgZG8gTm90 YXJpYWRvIEkuUC4xHDAaBgNVBAsME0NhcnTDo28gZGUgQ2lkYWTDo28xFDASBgNV BAsMC3N1YkVDRXN0YWRvMUkwRwYDVQQDDEBFQyBkZSBBc3NpbmF0dXJhIERpZ2l0 YWwgUXVhbGlmaWNhZGEgZG8gQ2FydMOjbyBkZSBDaWRhZMOjbyAwMDE3MB4XDTIw MDYxNTE3NTU0OVoXDTMwMDYxNTE3NTU0OVowgfwxCzAJBgNVBAYTAlBUMRwwGgYD VQQKDBNDYXJ0w6NvIGRlIENpZGFkw6NvMSswKQYDVQQLDCJBc3NpbmF0dXJhIFF1 YWxpZmljYWRhIGRvIENpZGFkw6NvMRwwGgYDVQQLDBNDaWRhZMOjbyBQb3J0dWd1 w6pzMSowKAYDVQQEDCFWRU5UVVJBIERBIENSVVogTUFSTsOUVE8gWsOaUVVFVEUx DzANBgNVBCoMBkFORFLDiTEUMBIGA1UEBRMLQkkwNjg1NDA0NzcxMTAvBgNVBAMM KEFORFLDiSBWRU5UVVJBIERBIENSVVogTUFSTsOUVE8gWsOaUVVFVEUwggGiMA0G CSqGSIb3DQEBAQUAA4IBjwAwggGKAoIBgQDAx3I0oPFpupESQcdMJoVHvX7NYJPk CdqpnbRT8USit56No9xoUUFEQtZM1oo5yaAj0S4aSL/VDvKR9LoTTYynBnPddX8f QkiMrw/ufrnIln0PCkv5lIlPGoxK1exox872qZzxhhYpDOvCM/7vSlJka3lM27NP 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[3lixy]

TypeError: string indices must be integers is fixed in https://github.com/wbond/certvalidator/pull/28