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Last updated: 7/28/2014 10:21:43 AM

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Vulnerability Summary for CVE-2011-1024

Original release date: 03/19/2011
Last revised: 09/06/2011
Source: US-CERT/NIST

Overview

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

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.6 (MEDIUM) (AV:N/AC:H/Au:S/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: High
Authentication: Required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: SECUNIA
Name: 43331
Type: Advisory
External Source: MLIST
Name: [openldap-announce] 20110212 OpenLDAP 2.4.24 available
Type: Patch Information
External Source: SECUNIA
Name: 43708
External Source: MANDRIVA
Name: MDVSA-2011:056
External Source: SECTRACK
Name: 1025188
External Source: MANDRIVA
Name: MDVSA-2011:055
External Source: MLIST
Name: [oss-security] 20110225 Re: CVE Request -- OpenLDAP -- two issues
External Source: CONFIRM
Name: http://www.openldap.org/devel/cvsweb.cgi/servers/slapd/back-ldap/chain.c.diff?r1=1.76&r2=1.77&hideattic=1&sortbydate=0
Type: Patch Information
External Source: CONFIRM
Name: https://bugzilla.novell.com/show_bug.cgi?id=674985
External Source: REDHAT
Name: RHSA-2011:0346
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=680466
External Source: MLIST
Name: [oss-security] 20110224 CVE Request -- OpenLDAP -- two issues
External Source: SECUNIA
Name: 43718
External Source: VUPEN
Name: ADV-2011-0665
Type: Advisory
External Source: CONFIRM
Name: http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6607
External Source: MLIST
Name: [openldap-technical] 20100429 ppolicy master/slave issue
External Source: REDHAT
Name: RHSA-2011:0347
External Source: UBUNTU
Name: USN-1100-1

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)