CVE-2017-9214

En Open vSwitch (OvS) versión 2.7.0, mientras analiza un mensaje OFPT_QUEUE_GET_CONFIG_REPLY tipo OFP versión 1.0, se presenta una lectura excesiva búfer causada por un desbordamiento de enteros sin signo en la función “ofputil_pull_queue_get_config_reply10” en la biblioteca “lib/ofp-util.c”.

An unsigned integer wrap around that led to a buffer over-read was found when parsing OFPT_QUEUE_GET_CONFIG_REPLY messages in Open vSwitch (OvS). An attacker could use this issue to cause a remote denial of service attack.

Bhargava Shastry discovered that Open vSwitch incorrectly handled certain OFP messages. A remote attacker could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service. It was discovered that Open vSwitch incorrectly handled certain OpenFlow role messages. A remote attacker could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service. It was discovered that Open vSwitch incorrectly handled certain malformed packets. A remote attacker could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service. This issue only affected Ubuntu 17.04. Various other issues were also addressed.