Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2011-1024

Severity CVSS v4.0:
Pending analysis
Type:
CWE-264 Permissions, Privileges, and Access Control
Publication date:
20/03/2011
Last modified:
11/04/2025

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.

Impact

Vector 2.0
AV:N/AC:H/Au:S/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.60 MEDIUM
Vector: AV:N/AC:H/Au:S/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
4.60
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:openldap:openldap:2.4.6:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.7:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.8:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.9:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.10:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.11:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.12:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.13:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.14:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.15:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.16:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.17:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.18:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.19:*:*:*:*:*:*:*
cpe:2.3:a:openldap:openldap:2.4.20:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools