CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
93.9%
CentOS Errata and Security Advisory CESA-2016:2591
Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC).
The following packages have been upgraded to a newer upstream version: krb5 (1.14.1). (BZ#1292153)
Security Fix(es):
A NULL pointer dereference flaw was found in MIT Kerberos kadmind service. An authenticated attacker with permission to modify a principal entry could use this flaw to cause kadmind to dereference a null pointer and crash by supplying an empty DB argument to the modify_principal command, if kadmind was configured to use the LDAP KDB module. (CVE-2016-3119)
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. (CVE-2016-3120)
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section.
Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2016-November/029541.html
Affected packages:
krb5-devel
krb5-libs
krb5-pkinit
krb5-server
krb5-server-ldap
krb5-workstation
libkadm5
Upstream details at:
https://access.redhat.com/errata/RHSA-2016:2591
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
CentOS | 7 | i686 | krb5-devel | < 1.14.1-26.el7 | krb5-devel-1.14.1-26.el7.i686.rpm |
CentOS | 7 | x86_64 | krb5-devel | < 1.14.1-26.el7 | krb5-devel-1.14.1-26.el7.x86_64.rpm |
CentOS | 7 | i686 | krb5-libs | < 1.14.1-26.el7 | krb5-libs-1.14.1-26.el7.i686.rpm |
CentOS | 7 | x86_64 | krb5-libs | < 1.14.1-26.el7 | krb5-libs-1.14.1-26.el7.x86_64.rpm |
CentOS | 7 | x86_64 | krb5-pkinit | < 1.14.1-26.el7 | krb5-pkinit-1.14.1-26.el7.x86_64.rpm |
CentOS | 7 | x86_64 | krb5-server | < 1.14.1-26.el7 | krb5-server-1.14.1-26.el7.x86_64.rpm |
CentOS | 7 | x86_64 | krb5-server-ldap | < 1.14.1-26.el7 | krb5-server-ldap-1.14.1-26.el7.x86_64.rpm |
CentOS | 7 | x86_64 | krb5-workstation | < 1.14.1-26.el7 | krb5-workstation-1.14.1-26.el7.x86_64.rpm |
CentOS | 7 | i686 | libkadm5 | < 1.14.1-26.el7 | libkadm5-1.14.1-26.el7.i686.rpm |
CentOS | 7 | x86_64 | libkadm5 | < 1.14.1-26.el7 | libkadm5-1.14.1-26.el7.x86_64.rpm |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
93.9%