CVE-2011-1024 (GCVE-0-2011-1024)

Vulnerability from cvelistv5 – Published: 2011-03-20 01:00 – Updated: 2024-08-06 22:14
VLAI
Summary
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.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1042 records in the last 180 days details
References
URL Tags
http://security.gentoo.org/glsa/glsa-201406-36.xml vendor-advisoryx_refsource_GENTOO
http://www.redhat.com/support/errata/RHSA-2011-03… vendor-advisoryx_refsource_REDHAT
http://securitytracker.com/id?1025188 vdb-entryx_refsource_SECTRACK
http://secunia.com/advisories/43708 third-party-advisoryx_refsource_SECUNIA
http://www.openldap.org/its/index.cgi/Software%20… x_refsource_CONFIRM
http://www.openldap.org/lists/openldap-technical/… mailing-listx_refsource_MLIST
http://www.openldap.org/devel/cvsweb.cgi/servers/… x_refsource_CONFIRM
http://www.openldap.org/lists/openldap-announce/2… mailing-listx_refsource_MLIST
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
https://bugzilla.novell.com/show_bug.cgi?id=674985 x_refsource_CONFIRM
http://openwall.com/lists/oss-security/2011/02/25/13 mailing-listx_refsource_MLIST
http://www.redhat.com/support/errata/RHSA-2011-03… vendor-advisoryx_refsource_REDHAT
http://kb.juniper.net/InfoCenter/index?page=conte… x_refsource_CONFIRM
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://secunia.com/advisories/43718 third-party-advisoryx_refsource_SECUNIA
https://bugzilla.redhat.com/show_bug.cgi?id=680466 x_refsource_CONFIRM
http://openwall.com/lists/oss-security/2011/02/24/12 mailing-listx_refsource_MLIST
http://kb.juniper.net/InfoCenter/index?page=conte… x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-1100-1 vendor-advisoryx_refsource_UBUNTU
http://www.vupen.com/english/advisories/2011/0665 vdb-entryx_refsource_VUPEN
http://secunia.com/advisories/43331 third-party-advisoryx_refsource_SECUNIA
Date Public
2010-04-29 00:00
Show details on NVD website
To clipboard 

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          "value": "chain.c en back-ldap en OpenLDAP v2.4.x anteriores a v2.4.24 cuando se utiliza una configuraci\u00f3n maestro-esclavo con una superposici\u00f3n de la cadena y policy_forward_updates (tambi\u00e9n conocido como authentication-failure forwarding), permite a usuarios remotos autenticados eludir la autenticaci\u00f3n por programa externo mediante el env\u00edo de una contrase\u00f1a no v\u00e1lida para un servidor esclavo."
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            "value": "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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          {
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            "value": "chain.c en back-ldap en OpenLDAP v2.4.x anteriores a v2.4.24 cuando se utiliza una configuraci\u00f3n maestro-esclavo con una superposici\u00f3n de la cadena y policy_forward_updates (tambi\u00e9n conocido como authentication-failure forwarding), permite a usuarios remotos autenticados eludir la autenticaci\u00f3n por programa externo mediante el env\u00edo de una contrase\u00f1a no v\u00e1lida para un servidor esclavo."
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              "baseSeverity": "MEDIUM",
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              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
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              "userInteractionRequired": false
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    "redhat_vex": {
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      "current_release_date": "2025-11-21T12:58:46+00:00",
      "cve": "CVE-2011-1024",
      "id": "CVE-2011-1024",
      "initial_release_date": "2011-01-01T00:00:00+00:00",
      "product_status:fixed": "345",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openldap: forwarded bind failure messages cause success",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-1024.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-06-08T01:57:52Z",
      "cve": "CVE-2011-1024",
      "id": "CVE-2011-1024",
      "initial_release_date": "2023-02-15T05:54:07Z",
      "product_status:recommended": "6",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2011-1024",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2011-1024.json",
      "version": "9"
    }
  }
}



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Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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