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.

• CWE-264

• 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/43331Vendor Advisory
• 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=0Patch
• http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6607
• http://www.openldap.org/lists/openldap-announce/201102/msg00000.htmlPatch
• 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/2011/0665Vendor Advisory
• https://bugzilla.novell.com/show_bug.cgi?id=674985
• https://bugzilla.redhat.com/show_bug.cgi?id=680466
• 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/43331Vendor Advisory
• 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=0Patch
• http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6607
• http://www.openldap.org/lists/openldap-announce/201102/msg00000.htmlPatch
• 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/2011/0665Vendor Advisory
• https://bugzilla.novell.com/show_bug.cgi?id=674985
• https://bugzilla.redhat.com/show_bug.cgi?id=680466

Published

Mar 20, 2011

Last Modified

Jun 16, 2026

Status

Modified

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