Not 100% sure this is a Perl issue, but it seems to be. I have an IPN script that connects with PayPal to verify transactions. It was working fine until yesterday, when I installed LWP::Protocol::https. Since then, it's been failing with the error:

Can't connect to www.paypal.com:443 (certificate verify failed)

LWP::Protocol::https::Socket: SSL connect attempt failed error:1409008
+6:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed 
+at /usr/local/share/perl5/LWP/Protocol/http.pm line 47.

[download]

Running GET https://www.paypal.com from bash (which uses LWP) yields the same error message. OTOH, running GET https://www.gmail.com is successful.

Running openssl s_client -host paypal.com -port 443 returns (among other things) Verify return code: 0 (ok).

curl "https://www.paypal.com/cgi-bin/webscr?cmd=_notify-validate" successfully receives a response from PayPal. So it does seem to be Perl-specific.

Module versions:

LWP 6.13
LWP::Protocol::https 6.06
IO::Socket::SSL 2.015
Mozilla::CA 20141217 (note I've tried the script both using Mozilla::C
+A and without it... results have been the same)

[download]

Please let me know if there are other relevant modules. Perl version is 5.10.1. Server OS is RHEL 6.

In reply to LWP, "certificate verify failed" on known good certificate (paypal.com) by tunafish

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