ALAS-2017-793


Amazon Linux AMI Security Advisory: ALAS-2017-793
Advisory Release Date: 2017-02-06 18:00 Pacific
Severity: Low

Issue Overview:

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 )


Affected Packages:

krb5


Issue Correction:
Run yum update krb5 to update your system.

New Packages:
i686:
    krb5-debuginfo-1.14.1-27.41.amzn1.i686
    krb5-server-1.14.1-27.41.amzn1.i686
    krb5-devel-1.14.1-27.41.amzn1.i686
    krb5-pkinit-openssl-1.14.1-27.41.amzn1.i686
    libkadm5-1.14.1-27.41.amzn1.i686
    krb5-libs-1.14.1-27.41.amzn1.i686
    krb5-server-ldap-1.14.1-27.41.amzn1.i686
    krb5-workstation-1.14.1-27.41.amzn1.i686

src:
    krb5-1.14.1-27.41.amzn1.src

x86_64:
    krb5-devel-1.14.1-27.41.amzn1.x86_64
    krb5-server-1.14.1-27.41.amzn1.x86_64
    krb5-server-ldap-1.14.1-27.41.amzn1.x86_64
    krb5-workstation-1.14.1-27.41.amzn1.x86_64
    libkadm5-1.14.1-27.41.amzn1.x86_64
    krb5-pkinit-openssl-1.14.1-27.41.amzn1.x86_64
    krb5-libs-1.14.1-27.41.amzn1.x86_64
    krb5-debuginfo-1.14.1-27.41.amzn1.x86_64