vulnerability
Oracle Linux: CVE-2016-3120: ELSA-2016-2591: krb5 security, bug fix, and enhancement update (LOW)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:L/Au:S/C:N/I:N/A:P) | Jul 19, 2016 | Nov 9, 2016 | Dec 3, 2025 |
Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Published
Jul 19, 2016
Added
Nov 9, 2016
Modified
Dec 3, 2025
Description
The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.
A NULL pointer dereference flaw was found in MIT Kerberos krb5kdc service. An authenticated attacker could use this flaw to cause krb5kdc to dereference a null pointer and crash by making an S4U2Self request, if the restrict_anonymous_to_tgt option was set to true.
A NULL pointer dereference flaw was found in MIT Kerberos krb5kdc service. An authenticated attacker could use this flaw to cause krb5kdc to dereference a null pointer and crash by making an S4U2Self request, if the restrict_anonymous_to_tgt option was set to true.
Solutions
oracle-linux-upgrade-krb5-develoracle-linux-upgrade-krb5-libsoracle-linux-upgrade-krb5-pkinitoracle-linux-upgrade-krb5-serveroracle-linux-upgrade-krb5-server-ldaporacle-linux-upgrade-krb5-workstationoracle-linux-upgrade-libkadm5
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