Red Hat Bugzilla – Bug 1477048
[lftp] connection to https://arxiv.org fails due to certificate error
Last modified: 2018-05-14 03:48:21 EDT
Created attachment 1307390 [details]
Certificate information returned by Firefox for https://arxiv.org
Description of problem:
Any attempt to connect to https://arxiv.org fails when verifying the certificate's issuer:
$ lftp https://arxiv.org
cd: Fatal error: Certificate verification: Not trusted: no issuer was found (C4:3F:D4:BD:3C:BA:B7:8C:45:B1:6B:87:3B:C0:7B:A4:CF:32:99:A2)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Run 'lftp https://arxiv.org'.
Attempt to connect fails with the error message: "Fatal error: Certificate verification: Not trusted: no issuer was found (C4:3F:D4:BD:3C:BA:B7:8C:45:B1:6B:87:3B:C0:7B:A4:CF:32:99:A2)".
Connection is established successfully.
- The same site can be accessed successfully with Firefox, and the related connection information does not reveal any issue (see attached screenshot).
- The issue appeared sometime during the last months.
No improvement after upgrading to lftp-4.8.0-1.fc26.
It seems that the problem is caused by a missing certificate in the chain of certificates returned by gnutls function in lftp (at least according to the upstream). I tried to look into the problem and suggested some ideas to the upstream.
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