CVE-2016-3119 – krb5: null pointer dereference in kadmin

https://notcve.org/view.php?id=CVE-2016-3119

The process_db_args function in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c in the LDAP KDB module in kadmind in MIT Kerberos 5 (aka krb5) through 1.13.4 and 1.14.x through 1.14.1 mishandles the DB argument, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request to modify a principal. La función process_db_args en plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c en el módulo LDAP KDB en kadmind en MIT Kerberos 5 (también conocido como krb5) hasta la versión 1.13.4 y 1.14.x hasta la versión 1.14.1 no maneja adecuadamente el argumento DB, lo que permite a usuarios remotros autenticados provocar una denegación de servicio (referencia a puntero NULL y caída de demonio) a través de una petición manipulada para modificar una principal. 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. • http://lists.opensuse.org/opensuse-updates/2016-04/msg00007.html http://lists.opensuse.org/opensuse-updates/2016-04/msg00055.html http://rhn.redhat.com/errata/RHSA-2016-2591.html http://www.securityfocus.com/bid/85392 http://www.securitytracker.com/id/1035399 https://github.com/krb5/krb5/commit/08c642c09c38a9c6454ab43a9b53b2a89b9eef99 https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html https://access.redhat.com/security/cve/CVE-2016-3119 https://bugzilla.redhat.com/show_bug& • CWE-476: NULL Pointer Dereference •