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PostPosted: Tue Jan 24, 2017 6:51 pm 

Joined: Mon Jan 23, 2017 2:32 pm
Posts: 2
Hello Guys
I have installed OpenVPN with your pam_yubico Module as suggested at https://developers.yubico.com/yubico-pam/ on a fresh installed Ubuntu Server 16.04 LTS and now the OpenVPN crashes every time a user wants to connect since i have added the account line in the PAM Configuration-file for OpenVPN.
before the setup works fine with my own account which is present at the local machine, now i wanted a test with a new testing user and discovered that the account required line is needed. So i added it and now it's crashing the openVPN... any suggestions why this happens?

My Config-Files are
plugin /usr/lib/openvpn/openvpn-plugin-auth-pam.so openvpn

auth required pam_yubico.so id=<ID> \
        yubi_attr=<ATTRName> \
        capath=/etc/ssl/certs \
        ldap_uri=ldap://ad.intern.dc.de/ \
        ldapdn=ou=worker,dc=intern,dc=dc,dc=de \
        ldap_bind_user=user@intern.dc.de ldap_bind_password=<passwd> \
        ldap_filter=(&(sAMAccountName=%u)(memberOf=CN=group,OU=worker,DC=intern,DC=dc,DC=de)) \
account required pam_yubico.so

And the corresponding logfile-lines are
[../pam_yubico.c:authorize_user_token_ldap(286)] try bind with: user@intern.dc.de:[<passwd>]
[../pam_yubico.c:authorize_user_token_ldap(319)] LDAP : look up object base='ou=worker,dc=intern,dc=dc,dc=de' filter='(&(sAMAccountName=vpnuser)(memberOf=CN=group,OU=worker,DC=intern,DC=dc,DC=de))', ask for attribute '<ATTRName>'
[../pam_yubico.c:authorize_user_token_ldap(355)] LDAP : Found 1 values - checking if any of them match '<yubiKey>::<yubiKey>'
[../pam_yubico.c:authorize_user_token_ldap(362)] Token Found :: <yubiKey>
[../pam_yubico.c:pam_sm_authenticate(1095)] done. [Success]
[../pam_yubico.c:pam_sm_acct_mgmt(1128)] pam_sm_acct_mgmt returing PAM_SUCCESS
*** stack smashing detected ***: /usr/sbin/openvpn terminated

PS: Sorry for my Bad English... I am a native German-Speaker.

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