CVE-2011-1527: n/a vulnerability

CVE-2011-1527: The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, wh...

The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 22:28 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2011-1527 is a denial-of-service flaw in MIT Kerberos KDC deployments using the LDAP backend. A remote request with mismatched realm string case can crash the KDC daemon, interrupting Kerberos authentication. The issue is old and narrowly scoped to krb5 1.9 through 1.9.1 with kdb_ldap enabled. Exposure is likely limited to legacy MIT Kerberos KDCs running versions 1.9 to 1.9.1 and configured with the LDAP database backend. Standard non-LDAP backends are not identified as affected in the bundle. Treat as a targeted legacy-infrastructure issue. Prioritize if Kerberos remains business-critical and any KDC still runs the affected LDAP-backed version; otherwise track as historical hygiene. Mitigation focus: Identify MIT krb5 KDC servers using the LDAP backend.; Upgrade affected krb5 packages using MIT or operating-system vendor guidance.; Review Red Hat, Mandriva, Debian, MIT, and CERT advisories for environment-specific fixes..

Prepared: Jun 27, 2026, 17:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2011-1527 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 20, 2011, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.