Authentication Bypass Vulnerability in OpenLDAP 2.4.x with Chain Overlay and Ppolicy_forward_updates

CVE-2011-1024 · MEDIUM Severity

AV:N/AC:H/AU:S/C:P/I:P/A:P

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.

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