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TI-2011-01348 Aliases CVE-2011-1529GHSA-54mf-f57f-83fj

The lookup_lockout_policy function in the Key Distribution Center (KDC) in MIT Kerberos 5…

Priority MEDIUM 41CWE-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 lookup_lockout_policy function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4 and 1.9 through 1.9.1, when the db2 (aka Berkeley DB) or LDAP back end is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via vectors that trigger certain process_as_req errors.

Why it matters now

EPSS 0.04046 90th 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 · 7

CPEVersionsRoleVendor
cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*1.8Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*1.8.1Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*1.8.2Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*1.8.3Vulnerablemoos-ivp
cpe:2.3:a:mit:kerberos_5:1.8.4:*:*:*:*:*:*:*1.8.4Vulnerablemoos-ivp
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_5:1.8:*:*:*:*:*:*:* Versions 1.8 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:* Versions 1.8.1 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:* Versions 1.8.2 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:* Versions 1.8.3 Vulnerable ·moos-ivp
  • cpe:2.3:a:mit:kerberos_5:1.8.4:*:*:*:*:*:*:* Versions 1.8.4 Vulnerable ·moos-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-2011-1529
  2. 2026-10-03 Alias added: GHSA-54mf-f57f-83fj

References

Advisory 6

  • 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