Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2011-1529

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
20/10/2011
Last modified:
11/04/2025

Description

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.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:mit:kerberos_5:1.8:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.9:*:*:*:*:*:*:*
cpe:2.3:a:mit:kerberos_5:1.9.1:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools