Updated OpenLDAP packages has been released for CentOS:

CESA-2015:1840 Important CentOS 5 openldap Security Update
CESA-2015:1840 Important CentOS 6 openldap Security Update
CESA-2015:1840 Important CentOS 7 openldap Security Update

CESA-2015:1840 Important CentOS 5 openldap Security Update

CentOS Errata and Security Advisory 2015:1840 Important

Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-1840.html

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

i386:
cc181bbfac7f8256afb84c7345aeeabe02967ce32d0b19980e3d10ab7eff941d compat-openldap-2.3.43_2.2.29-29.el5_11.i386.rpm
b22b59b70a24b9d81e3636dd64c13bcb31837d0fc585e8d40d3c42b09addc982 openldap-2.3.43-29.el5_11.i386.rpm
3071dbeb025e46da4b8ebb3cf697871525e0ff3f319c062f989d6538b4b6a3d3 openldap-clients-2.3.43-29.el5_11.i386.rpm
f42c1033d9c8749d85358d8ed2636c5f43a06bc15561dca4d00adc69483044bf openldap-devel-2.3.43-29.el5_11.i386.rpm
7dee4dd6721f9222268e9c11d96db5d0624ec0067d7924b0eeebf78791cad6ee openldap-servers-2.3.43-29.el5_11.i386.rpm
a738a621d1fff4855f994c2eb316dd277cda9f20c74c3437c7718f21ddad7901 openldap-servers-overlays-2.3.43-29.el5_11.i386.rpm
f902ae9ff4405241871cbe51bdf94064a4b1759d7fbce279df5d8be04d26d074 openldap-servers-sql-2.3.43-29.el5_11.i386.rpm

x86_64:
cc181bbfac7f8256afb84c7345aeeabe02967ce32d0b19980e3d10ab7eff941d compat-openldap-2.3.43_2.2.29-29.el5_11.i386.rpm
5757fda05767444bb1642a8191c3b6f2d76745ba30132ea9d3fd766379f99e2b compat-openldap-2.3.43_2.2.29-29.el5_11.x86_64.rpm
b22b59b70a24b9d81e3636dd64c13bcb31837d0fc585e8d40d3c42b09addc982 openldap-2.3.43-29.el5_11.i386.rpm
e6dd51c4f2f4a23fec2be3f298b76abc87b3930e2fa0f3c0ad440f5ef70da35e openldap-2.3.43-29.el5_11.x86_64.rpm
a7bdd364235403770fac7632b572323bda2565b3c9f23d371768ab859dfc5137 openldap-clients-2.3.43-29.el5_11.x86_64.rpm
f42c1033d9c8749d85358d8ed2636c5f43a06bc15561dca4d00adc69483044bf openldap-devel-2.3.43-29.el5_11.i386.rpm
32164d50ac497028e5c24f8bb1535c37abdf78cd230922cc63bb0c8ac7cf65af openldap-devel-2.3.43-29.el5_11.x86_64.rpm
818492aef0cad81ecc9ea66f4eeff8a4a44a23ed223927d601e4b555d3499e51 openldap-servers-2.3.43-29.el5_11.x86_64.rpm
d21a9d33c3559b97ee2a295c04ce723b4eae3ed46846baafe760e0cd495f5945 openldap-servers-overlays-2.3.43-29.el5_11.x86_64.rpm
13db919bbc3c414f54fb656b7e127f8cfb8700830ef261bd16b4d65e162c9f52 openldap-servers-sql-2.3.43-29.el5_11.x86_64.rpm

Source:
7092b7f27ed18b2fc5496587940b14f1d223762cf8182f282a65db3c4296bc13 openldap-2.3.43-29.el5_11.src.rpm

CESA-2015:1840 Important CentOS 6 openldap Security Update

CentOS Errata and Security Advisory 2015:1840 Important

Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-1840.html

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

i386:
ce59a16e8d9f797feff522711be61aa9bd976ddcd0e629c260a9e1120b1abda4 openldap-2.4.40-6.el6_7.i686.rpm
90cfd98aa85f7e6b816f3b9472a8bbd26979a1224fce84390d784da68f582d20 openldap-clients-2.4.40-6.el6_7.i686.rpm
afa5499f0434b52f57fe96d70489d195e73f9ef59ca22f6a4b12c304ebb43635 openldap-devel-2.4.40-6.el6_7.i686.rpm
80b87de3386d0b711597554cce65d8b4e4cdea909425675562ccef2d28402453 openldap-servers-2.4.40-6.el6_7.i686.rpm
be985035faf4b5b8dbee232a00eb9631659a99106d14b2044f82d8ccec34dd8a openldap-servers-sql-2.4.40-6.el6_7.i686.rpm

x86_64:
ce59a16e8d9f797feff522711be61aa9bd976ddcd0e629c260a9e1120b1abda4 openldap-2.4.40-6.el6_7.i686.rpm
b8658e6e57809577463a9f168656d9ccbb1f2d9e5d480d77ace7eac594789350 openldap-2.4.40-6.el6_7.x86_64.rpm
516d525207917340a6fc22b4cc3d1fd6d9398a0ce79ef746579155d95aac9325 openldap-clients-2.4.40-6.el6_7.x86_64.rpm
afa5499f0434b52f57fe96d70489d195e73f9ef59ca22f6a4b12c304ebb43635 openldap-devel-2.4.40-6.el6_7.i686.rpm
655274004efc40a05c9947af3cb1ff654b8038cbd083fc44e25190a18f2c776d openldap-devel-2.4.40-6.el6_7.x86_64.rpm
678906aa40444064d8188d74ca33591dcc34da97723f3aff762524798b28500c openldap-servers-2.4.40-6.el6_7.x86_64.rpm
d8fcc13e67551c0893f0826e1f986930094dc5efffd9cce2af0577612281d597 openldap-servers-sql-2.4.40-6.el6_7.x86_64.rpm

Source:
63c1dcfee015ccec322361e78080c686e7f14a51b7cf331726b3017c1c760a67 openldap-2.4.40-6.el6_7.src.rpm

CESA-2015:1840 Important CentOS 7 openldap Security Update

CentOS Errata and Security Advisory 2015:1840 Important

Upstream details at : https://rhn.redhat.com/errata/RHSA-2015-1840.html

The following updated files have been uploaded and are currently
syncing to the mirrors: ( sha256sum Filename )

x86_64:
c0fbed4f2b242cde4830df33b394a226e705eae993e17e38f90e663f511fe6fd openldap-2.4.39-7.el7.centos.i686.rpm
960f62ded3dfa6c3f92f3e466ebc07c0b4f30465c3fefd4ea302128152c936e0 openldap-2.4.39-7.el7.centos.x86_64.rpm
1c1853339b71aa16592859b80f670a450a0b45cc713ccca4c3d770a76ee096a8 openldap-clients-2.4.39-7.el7.centos.x86_64.rpm
51dc10dfcfc9ba0ff965256477d789b692f942772c54845edbc8fc5f8f1e5450 openldap-devel-2.4.39-7.el7.centos.i686.rpm
d906620f31cdd8a5866dfac65bcfc42fc0fec7a7b826922da0afd29d2c8dfd2b openldap-devel-2.4.39-7.el7.centos.x86_64.rpm
49d45cc17bd198d65ba8fea53944e4f8e8525ec61eaf91b9f03da839acf530c4 openldap-servers-2.4.39-7.el7.centos.x86_64.rpm
99d31fc1f35404da6a32b2ca4239a124966d3f51388c35fafa06dcf0018bd864 openldap-servers-sql-2.4.39-7.el7.centos.x86_64.rpm

Source:
5ff494cb8637ecc22d9a5299d51bbd6a1dd646f75a4cd97315c9f303259f0438 openldap-2.4.39-7.el7.centos.src.rpm