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Oracle Linux: CVE-2016-3120: ELSA-2016-2591: krb5 security, bug fix, and enhancement update (LOW)

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Oracle Linux: CVE-2016-3120: ELSA-2016-2591: krb5 security, bug fix, and enhancement update (LOW)

Severity
5
CVSS
(AV:N/AC:H/Au:S/C:N/I:N/A:C)
Published
07/19/2016
Created
07/25/2018
Added
11/09/2016
Modified
07/22/2024

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.

Solution(s)

  • oracle-linux-upgrade-krb5-devel
  • oracle-linux-upgrade-krb5-libs
  • oracle-linux-upgrade-krb5-pkinit
  • oracle-linux-upgrade-krb5-server
  • oracle-linux-upgrade-krb5-server-ldap
  • oracle-linux-upgrade-krb5-workstation
  • oracle-linux-upgrade-libkadm5

References

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