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CVE-2011-1024

4.6 · MEDIUM

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 remo…

Published Mar 20, 2011openldapCWE-264EPSS 2.59%

Overview

CVE-2011-1024 is a medium-severity vulnerability affecting openldap openldap. It was published on March 20, 2011 and has a CVSS 2.0 base score of 4.6 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.6, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from openldap. Update openldap to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refkb.juniper.net/InfoCenter/index?page=content&id=JSA10705Refkb.juniper.net/InfoCenter/index?page=content&id=JSA10735Refopenwall.com/lists/oss-security/2011/02/24/12Refopenwall.com/lists/oss-security/2011/02/25/13Refsecunia.com/advisories/43331Refsecunia.com/advisories/43708Refsecunia.com/advisories/43718Refsecurity.gentoo.org/glsa/glsa-201406-36.xmlRefsecuritytracker.com/id?1025188Refwww.mandriva.com/security/advisories?name=MDVSA-2011:055

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1024?

CVE-2011-1024 is a medium-severity vulnerability affecting openldap openldap. It was published on March 20, 2011 and has a CVSS 2.0 base score of 4.6 (MEDIUM).

How severe is CVE-2011-1024?

This vulnerability has a CVSS 2.0 base score of 4.6, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2011-1024?

Check the references section for vendor advisories and patches from openldap. Update openldap to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-1024?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1024 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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