[gnutls-devel] GnuTLS | GnuTLS appects a cert with critical issuerAltName (#1163)

Read-only notification of GnuTLS library development activities gnutls-devel at lists.gnutls.org
Tue Jan 26 08:36:08 CET 2021

GOODPWDCETCSZ created an issue: https://gitlab.com/gnutls/gnutls/-/issues/1163

## Description of problem:
GnuTLS appects a cert with critical issuerAltName. However, OpenSSL, mbedTLS, wolfSSL, and NSS reject it. According to RFC 5280, the ext issuerAltName should be marked as non-critical.

## Version of gnutls used:

3.5.5, 3.6.13

## Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)

Ubuntu x64

## How reproducible:

Steps to Reproduce:

 * `certtool -i --infile seed-73s19-723s32 .pem`

## Actual results:
Chain verification output: Verified. The certificate is trusted. 

## Expected results:

The cert is rejected due to its critical issuerAltName.

## Attachement


Reply to this email directly or view it on GitLab: https://gitlab.com/gnutls/gnutls/-/issues/1163
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