Low: krb5

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  

Additional References

Red Hat: CVE-2016-3119, CVE-2016-3120

Mitre: CVE-2016-3119, CVE-2016-3120