Selva Nair <selva.nair <at> gmail.com> writes:

> openssl may be using secure_getenv instead of getenv, in which case it may 
not see the env variable depending on how openvpn is started as well as any 
security restrictions in place. Just guessing.

You're guessing right. Thanks to @richmoore1 from #openssl, who said there's 
no OPENSSL_ENABLE_MD5_VERIFY in openssl's source so it had to be patched in 
by distro, I googled OPENSSL_ENABLE_MD5_VERIFY again and found the bug 
"OPENSSL_ENABLE_MD5_VERIFY can not be used with NetworkManager & OpenVPN to 
re-enable MD5 certificate verification" 
(https://bugzilla.redhat.com/show_bug.cgi?id=1174915)
However, according to this bug this was already fixed in Fedora 21 yet I 
observe this bug in Fedora 24 and someone else observed it in CentOS 7.1 It 
looks like the fix might have been reverted in the meantime.



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