Read the docs
TI-2011-01346 Aliases CVE-2011-1527GHSA-848m-2rw5-f2f2

The kdb_ldap plugin in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9…

Priority MEDIUM 40CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Complete
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

EPSS 0.03653 89th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:*1.9Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.9.1:*:*:*:*:*:*:*1.9.1Vulnerablemoos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:* Versions 1.9 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.9.1:*:*:*:*:*:*:* Versions 1.9.1 Vulnerable ·moos-ivp

Remediation

Red Hat 1 advisory

  • RHSA-2011:1379 Released 2011-10-18 · Red Hat rating Moderate
    krb5 security update
    • Red Hat Enterprise Linux Server (v. 6) krb5-1.9-9.el6_1.2, krb5-devel-1.9-9.el6_1.2, krb5-devel-1.9-9.el6_1.2.ppc +7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2011:1379
Not affected: 2 products
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-1527
  2. 2026-10-03 Alias added: GHSA-848m-2rw5-f2f2

References

Advisory 4

Other 1

  • TI-2024-17421 Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c. CVSS 3.1HIGH 7.5
  • TI-2001-00539 Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows… CVSS 2.0HIGH 10.0
  • TI-2026-29130 NULL pointer dereference in moos-ivp Kerberos 5 CVSS 3.1HIGH 7.5
  • TI-2007-00929 The telnet daemon (telnetd) in MIT krb5 before 1.6.1 allows remote attackers to bypass… CVSS 2.0HIGH 10.0
  • TI-2011-00268 The process_chpw_request function in schpw.c in the password-changing functionality in… CVSS 2.0HIGH 10.0
  • TI-2001-00245 Buffer overflows in BSD-based FTP servers allows remote attackers to execute arbitrary… CVSS 2.0HIGH 10.0
See all 138 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences