Industry-wide OSPF routing vulnerability on Lenovo and IBM Networking Switches - us

Lenovo Security Advisory: LEN-14078

Potential Impact: Erasure or alteration of routing tables within a routing domain

Severity: Medium

**Scope of Impact:**Industry-Wide

**CVE Identifier:**CVE-2017-3752

Summary Description:

An industry-wide vulnerability has been identified in the implementation of the Open Shortest Path First (OSPF) routing protocol used on some Lenovo switches. Exploitation of these implementation flaws may result in attackers being able to erase or alter the routing tables of one or many routers, switches, or other devices that support OSPF within a routing domain.

In order for an exploit to be successful, an attacker needs to control a router or device supporting OSPF within a routing domain. From that compromised device, the attacker can send crafted OSPF messages that can permanently (until router restart) erase or alter the routing tables of all other routers within the routing domain.

Mitigation Strategy for Customers (what you should do to protect yourself):

Update to the latest firmware version available for your switch.