CVE-2011-1024 Information

Description

chain.c in back-ldap in OpenLDAP 2.4.x before 2.4.24 when a master-slave configuration with a chain overlay and ppolicy_forward_updates (aka authentication-failure forwarding) is used allows remote authenticated users to bypass external-program authentication by sending an invalid password to a slave server.

Reference

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705 http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10735 http://openwall.com/lists/oss-security/2011/02/24/12 http://openwall.com/lists/oss-security/2011/02/25/13 http://secunia.com/advisories/43331 http://secunia.com/advisories/43708 http://secunia.com/advisories/43718 http://security.gentoo.org/glsa/glsa-201406-36.xml http://securitytracker.com/id?1025188 http://www.mandriva.com/security/advisories?name=MDVSA-2011:055 http://www.mandriva.com/security/advisories?name=MDVSA-2011:056 http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/back-ldap/chain.c.diff?r1=1.76&r2=1.77&hideattic=1&sortbydate=0 http://www.openldap.org/its/index.cgi/Software20Bugs?id=6607 http://www.openldap.org/lists/openldap-announce/201102/msg00000.html http://www.openldap.org/lists/openldap-technical/201004/msg00247.html http://www.redhat.com/support/errata/RHSA-2011-0346.html http://www.redhat.com/support/errata/RHSA-2011-0347.html http://www.ubuntu.com/usn/USN-1100-1 http://www.vupen.com/english/advisories/2011/0665 https://bugzilla.novell.com/show_bug.cgi?id=674985 https://bugzilla.redhat.com/show_bug.cgi?id=680466