Explain CVE-2011-1024
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.
Affected Products: n/a
References: [{'name': 'GLSA-201406-36', 'tags': ['vendor-advisory', 'x_refsource_GENTOO'], 'url': 'http://security.gentoo.org/glsa/glsa-201406-36.xml'}, {'name': 'RHSA-2011:0346', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2011-0346.html'}, {'name': '1025188', 'tags': ['vdb-entry', 'x_refsource_SECTRACK'], 'url': 'http://securitytracker.com/id?1025188'}, {'name': '43708', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/43708'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6607'}, {'name': '[openldap-technical] 20100429 ppolicy master/slave issue', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://www.openldap.org/lists/openldap-technical/201004/msg00247.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/back-ldap/chain.c.diff?r1=1.76&r2=1.77&hideattic=1&sortbydate=0'}, {'name': '[openldap-announce] 20110212 OpenLDAP 2.4.24 available', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://www.openldap.org/lists/openldap-announce/201102/msg00000.html'}, {'name': 'MDVSA-2011:056', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2011:056'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.novell.com/show_bug.cgi?id=674985'}, {'name': '[oss-security] 20110225 Re: CVE Request -- OpenLDAP -- two issues', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/02/25/13'}, {'name': 'RHSA-2011:0347', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2011-0347.html'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705'}, {'name': 'MDVSA-2011:055', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2011:055'}, {'name': '43718', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/43718'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=680466'}, {'name': '[oss-security] 20110224 CVE Request -- OpenLDAP -- two issues', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/02/24/12'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10735'}, {'name': 'USN-1100-1', 'tags': ['vendor-advisory', 'x_refsource_UBUNTU'], 'url': 'http://www.ubuntu.com/usn/USN-1100-1'}, {'name': 'ADV-2011-0665', 'tags': ['vdb-entry', 'x_refsource_VUPEN'], 'url': 'http://www.vupen.com/english/advisories/2011/0665'}, {'name': '43331', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/43331'}]
CVE State: PUBLISHED