CVE-2017-9265

En Open vSwitch (OvS) versión 2.7.0, se presenta una lectura excesiva del búfer mientras se analiza el mensaje group mod OpenFlow enviado desde el controlador en la biblioteca “lib/ofp-util.c” en la función “ofputil_pull_ofp15_group_mod”.

A buffer over-read issue was found in Open vSwitch (OvS) which emerged while parsing the GroupMod OpenFlow messages sent from the controller. The issue could enable an attacker to cause a denial of service type of 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.