CVE:CVE-2018-17204
CNNVD:CNNVD-201809-882
Open vSwitch（OvS）是一款以开源技术作为基础（遵循Apache2.0许可）的多层虚拟交换机产品，它通过编程扩展支持大规模网络自动化，标准的管理接口和协议等。
OvS 2.7.x版本至2.7.6版本中的lib/ofp-util.c文件的‘parse_group_prop_ntr_selection_method’函数存在安全漏洞。攻击者可利用该漏洞造成断言失败。
solution:Upgrade openvswitch openvswitch to a higher version than 2.7.6,and avoid the version [2.7.0,2.7.6]; Upgrade redhat openstack to a higher version than 10,13,and avoid the version 10,13; Upgrade canonical ubuntu_linux to a higher version than 16.04,18.04,and avoid the version 16.04,18.04; Upgrade debian debian_linux to a higher version than 9.0,and avoid the version 9.0