Cisco fixed two high severity vulnerabilities in two products this week that could have let an attacker trigger a denial of service condition or bypass local authentication.

More then on OSPF LSA type 5, External type 1 next blog post. To try this at home, you can do a shorter version of the lab with just two routers.

Security advisories issued for management vulnerabilities; OSPF open to crafted packet attacks Cisco issued three security advisories this week — two involving its Wide Area Application Services ...