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9897 discussions

TLS handshake callback
by Jérémie HUNEL 09 Nov '21

09 Nov '21

Hi, I would like to use a custom TLS handshake callback to verify the server's certificate, however it seems that there is not this option yet in openldap. I saw the LDAP_OPT_CONNECT_CB option but this is not exactly what I'm looking for. Is there a way to specify a custom callback? If not, is it a feature that you plan to develop? Regards, Jeremie Internal

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OpenLDAP 2.6 Build Failure - undefined reference
by Simon Pichugin 03 Nov '21

03 Nov '21

Hi, I'm trying to build OpenLDAP 2.6 on Fedora Rawhide and I'm getting the error message: /usr/bin/ld: ./.libs/libldap.so: undefined reference to `ber_sockbuf_io_udp' I've checked commits from https://bugs.openldap.org/show_bug.cgi?id=9673 and found that 'ber_sockbuf_io_udp' was not added to https://git.openldap.org/openldap/openldap/-/blob/master/libraries/liblber/… Is it intentional? If I add 'ber_sockbuf_io_udp' there, my build passes the stage successfully. If 'ber_sockbuf_io_udp' absence is intentional, should I somehow account for it during './configure'? Thank you! Regards, Simon

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RE: [EXT]:Re: OpenLDAP SSLV3 disable
by Quanah Gibson-Mount 03 Nov '21

03 Nov '21

--On Wednesday, November 3, 2021 11:13 PM +0000 "Ballem, Narayanan" <Narayanan.Ballem(a)Staples.com> wrote: > Yes it just adding few CN entries to DB for active directory sync up. Not > sure where is the issue then in disabling SSLv3. Do you think is 2.4.54 > might not support TLSprotocolMin? I think it supports. > > I did run slapd in debug mode while starting not seeing any issue TLS > version. > > @(#) $OpenLDAP: slapd 2.4.54 (Oct 27 2020 18:47:58) I testing with 2.4.59 on RHEL7 linked to the RHEL7 OpenSSL libraries and could not reproduce the issue. There are no fixes between 2.4.54 and 2.4.59 related to OpenSSL or TLS. I would note that your TLS configuration directives are inside the database backend definition which is invalid. They are global options and should appear before any database xxxx configuration section. --Quanah -- Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: <http://www.symas.com>

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RE: [EXT]:Re: OpenLDAP SSLV3 disable
by Quanah Gibson-Mount 03 Nov '21

03 Nov '21

--On Wednesday, November 3, 2021 10:51 PM +0000 "Ballem, Narayanan" <Narayanan.Ballem(a)Staples.com> wrote: > We do have slapd.conf and as part of config we add a few entries to DB > using LDIF file which has OU/CN/Object class information. > > Do we need to update any config over there or do I need to update > anywhere w.r.t CN=config in slapd.conf ? > > /opt/dirsvcs/sbin/slapadd -f /opt/dirsvcs/etc/openldap/slapd.conf -l > /opt/dirsvcs/etc/openldap/base.ldif That means you're telling slapadd to use that slapd.conf file, it says nothing about what slapd itself is using at startup. > Do we have a tarball option for the 2.6 version? I can look to upgrade it. The OpenLDAP website has a tarball of the source available for download. --Quanah -- Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: <http://www.symas.com>

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OpenLDAP SSLV3 disable
by Ballem, Narayanan 03 Nov '21

03 Nov '21

HI Team, Hope you can help with this issue. I am trying to disable SSLV3 on OpenLDAP servers we are using OpenLDAP as a proxy with upstream Active directory servers. we are using CA certs on this openssl we would like to disable SSLV3. Based on earlier update from OpenLdap Technical support team, I added "TLSProtocolMin 3.2" and able to restart slapd service as well without any issue. However when we tried to test SSLV3 connectivity it's still showing SSLv3 enabled . This OpenLDAP server built on RHEL server with locally compiled and openssl rpm/binaries are part of base RHEL OS image. cat /opt/dirsvcs/etc/openldap/slapd.conf|grep -i TLSProtocolMin TLSProtocolMin 3.2 openssl s_client -connect localhost:1636 -ssl3 -quiet depth=3 CN = XXX Root Certificate Authority verify return:1 SSLV3 is insecure as you know we are looking to disable this asap . Any help in addressing this much appreciated. Thanks Narayanan Linux Platform Engineering 500 Staples Drive, Framingham MA Office: 508-253-6909 | Mobile: 508-333-4395 [signature_1767107679]

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memberof vs groupMembership
by Keith LeValley 01 Nov '21

01 Nov '21

Good afternoon, I am working to migrate my LDAP setup to openldap, however I have run into a problem around group membership. Specifically my old instance of ldap used the attribute "groupMembership" and I need to support this moving forward, so if you were to query the attribute "groupMembership" it needs to return the groups the user is part of. Currently in my test environment I have the memberof overlay working, and I found the option *memberof-memberof-ad* which should allow me to create a custom attribute named "groupMembership" and point the overlay at that attribute. I am really hoping to avoid this though and would much rather have a cleaner solution. Maybe some type of interface that just acts as a pointer to the memberof attribute when they query groupMembership? But I am not familiar enough with openldap to know whether this is even possible. So I guess my question is; is the custom attribute going to be the solution here or is there another tool that I am unaware of? -- Keith LeValley Identity Services Architect, Davenport University phone: (616) 732-1102 klevalley2(a)davenport.edu

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OpenLDAP TLS ciphersuite and groups limit issue
by Ballem, Narayanan 29 Oct '21

29 Oct '21

HI Team, Hope you can help with this issue. 1)I am trying to disable SSLV3 on OpenLDAP servers we are using OpenLDAP as a proxy with upstream Active directory servers. we are using CA certs on this openssl we would like to disable SSLV3 I added the below entry slapd.conf but when I tried to start slapd it's failing to start TLSCipherSuite HIGH:MEDIUM:!SSLv2:!SSLV3 errors as below slapd[19899]: main: TLS init def ctx failed: -1 slapd[19899]: slapd stopped. slapd[19899]: connections_destroy: nothing to destroy. debug logs restart as below TLS: could not set cipher list HIGH:MEDIUM:!SSLv2:!SSLV3. 617c64c1 main: TLS init def ctx failed: -1 617c64c1 slapd stopped. 2) Also, did anybody notice this issue? I am facing the issue with a group display we have several users in group while looking for groups in getent group we are seeing a few users only not sure if there is any limit on group filed in Database. Thanks Narayanan Linux Platform Engineering 500 Staples Drive, Framingham MA Office: 508-253-6909 | Mobile: 508-333-4395 [signature_1767107679]

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logfile-rotate directive fails in 2.6.0
by David Coutadeur 29 Oct '21

29 Oct '21

Hello, Not sure this is a configuration problem or a bug, but when setting the logfile-rotate, I get: 617bc9ae.1b73de17 0x7f44f87c9740 /usr/local/openldap/etc/openldap/slapd.conf: line 12 (logfile-rotate 10 100 24) 617bc9ae.1b759154 0x7f44f87c9740 /usr/local/openldap/etc/openldap/slapd.conf: line 12: <logfile-rotate> handler exited with 16384! My configuration file is below. I am using the 2.6.0 release. The strange part is that the same configuration converted into cn=config seems to work well. Regards, David # # See slapd.conf(5) for details on configuration options. # This file should NOT be world readable. # include /usr/local/openldap/etc/openldap/schema/core.schema include /usr/local/openldap/etc/openldap/schema/cosine.schema include /usr/local/openldap/etc/openldap/schema/inetorgperson.schema include /usr/local/openldap/etc/openldap/schema/dyngroup.schema logfile-rotate 10 100 24 logfile /var/log/slapd-ltb/slapd.log logLevel 256 sasl-host ldap.my-domain.com pidfile /usr/local/openldap/var/run/slapd.pid argsfile /usr/local/openldap/var/run/slapd.args # Load dynamic backend modules: # moduleload back_ldap.la modulepath /usr/local/openldap/libexec/openldap moduleload argon2.la moduleload back_mdb.la moduleload dynlist.la moduleload memberof.la moduleload ppolicy.la moduleload syncprov.la moduleload unique.la access to dn.base="" by * read access to dn.base="cn=subschema" by * read ####################################################################### # config database definitions ####################################################################### database config rootdn cn=config rootpw secret access to attrs="userPassword" by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth =wdx by * auth access to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth manage ####################################################################### # MDB database definitions ####################################################################### database mdb maxsize 4294967296 suffix dc=my-domain,dc=com rootdn cn=Manager,dc=my-domain,dc=com rootpw secret directory /usr/local/openldap/var/openldap-data index objectClass eq index cn eq,sub index uid pres,eq index givenName pres,eq,sub index l pres,eq index employeeType pres,eq index mail pres,eq,sub index sn pres,eq,sub limits group="cn=admin,ou=groups,dc=my-domain,dc=com" size=unlimited time=unlimited access to attrs="userPassword" by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth =wdx by group.exact="cn=admin,ou=groups,dc=my-domain,dc=com" =wdx by self =wdx by * auth access to * by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth manage by group.exact="cn=admin,ou=groups,dc=my-domain,dc=com" write by users read

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Re: Antw: [EXT] Symas openldap 2.5 RPMs / openssl cert trust
by Paul B. Henson 28 Oct '21

28 Oct '21

On Thu, Oct 28, 2021 at 08:59:00AM +0200, Ulrich Windl wrote: > OK, thanks for explaining. I wasN#t aware that slapd uses ist own > versiomn of openssl. It doesn't necessarily in general, but specifically the Symas built RPMs do. If you use an OS packaged version it uses the os openssl, and if you build your own it does whatever you tell it to :).

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contextCSN not updated
by bourguijl＠gmail.com 28 Oct '21

28 Oct '21

Dears, I'm using 2.5.7 in a context of 4 MMR with 4 Replica and I just noticed contextCSN is no more updated for cn=config DB or other DB when I do a modification which one is well applied. What could be the issue ? Thx, J-L.

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