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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
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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      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-264\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2011-1024\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2011-03-20T02:00:03.627\",\"lastModified\":\"2026-04-29T01:13:23.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"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.\"},{\"lang\":\"es\",\"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.\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:H/Au:S/C:P/I:P/A:P\",\"baseScore\":4.6,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"HIGH\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.9,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-264\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.6:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5EC66226-A597-4A4C-932F-F4A7BAE119C8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.7:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4AEABC84-7B67-4FD4-A891-E52C80DC881E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.8:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"340F673A-295E-4B75-A9D1-E785B0440BE6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.9:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"49203E99-71E2-49D4-91A0-65AAAA7DC18F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.10:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"473AEC48-FBBF-4BEB-8728-1FA80DD94807\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.11:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7B0415EA-5F21-44C3-93F3-DDADBAA64449\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.12:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"16AFC655-E81F-4FDE-8030-9781A8B79E73\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.13:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E99FB859-D023-4B2B-A709-05E83A46E2A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.14:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8D2EEBC7-1FAF-43E2-A124-C387C02D9E2B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.15:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"95D242E4-D5EB-4785-A6EF-60B1E8E2B0EC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.16:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F6FEDD9C-FDF7-456A-B06C-0A4A4443991D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.17:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9245CDE2-B90A-4D47-BA20-A7869FF0A645\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.18:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FB993E4D-E573-4495-97DE-465DDB2AA2DF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.19:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D0F106A3-63D5-4D07-9440-6628DBA78BE5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.20:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"36CC03BC-DF34-43CD-90B0-27D23A1DD06A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.21:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"16C90FEE-527E-47F5-8840-517A55163D8E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.22:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0FAEA812-BB47-47A3-A975-B3B8D30DBA36\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:openldap:openldap:2.4.23:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5DE5D180-3972-40A0-ADAF-A4F3364D1381\"}]}]}],\"references\":[{\"url\":\"http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10705\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://kb.juniper.net/InfoCenter/index?page=content\u0026id=JSA10735\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://openwall.com/lists/oss-security/2011/02/24/12\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://openwall.com/lists/oss-security/2011/02/25/13\",\"source\":\"secalert@redhat.com\"},{\"url\":\"http://secunia.com/advisories/43331\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Vendor 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "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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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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.


Detection rules are retrieved from Rulezet.