Vulnerability Monitor

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CVE-2011-1528

The krb5_ldap_lockout_audit 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 LDAP back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, related to the locked_check_p function. NOTE: the Berkeley DB vector is covered by CVE-2011-4151.

Security Impact Summary

CVE-2011-1528 is a security vulnerability that . Impacting 1 product from mit organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-10-20T21:55:00.920

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

6.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mit	kerberos_5	1.8	Yes
Application	mit	kerberos_5	1.8.1	Yes
Application	mit	kerberos_5	1.8.2	Yes
Application	mit	kerberos_5	1.8.3	Yes
Application	mit	kerberos_5	1.8.4	Yes
Application	mit	kerberos_5	1.9	Yes
Application	mit	kerberos_5	1.9.1	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00009.html ([email protected])
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt Vendor Advisory ([email protected])
http://www.kb.cert.org/vuls/id/659251 US Government Resource ([email protected])
http://www.mandriva.com/security/advisories?name=MDVSA-2011:159 ([email protected])
http://www.mandriva.com/security/advisories?name=MDVSA-2011:160 ([email protected])
http://www.redhat.com/support/errata/RHSA-2011-1379.html Vendor Advisory ([email protected])
https://bugs.launchpad.net/ubuntu/+source/krb5/+bug/715579 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2011-10/msg00009.html (af854a3a-2127-422b-91ae-364da2661108)
http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-006.txt Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/659251 US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDVSA-2011:159 (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDVSA-2011:160 (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2011-1379.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.launchpad.net/ubuntu/+source/krb5/+bug/715579 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For mit's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.