Cloudflare Misconfiguration Behind Recent BGP Route Leak

Cloudflare Misconfiguration Behind Recent BGP Route Leak BleepingComputer www.bleepingcomputer.com/news/secu… Cloudflare has released additional details regarding a 25-minute Border Gateway Protocol (BGP) route leak that affected IPv6 traffic. The incident resulted in measurable network congestion, packet loss, and approximately 12 Gbps of dropped traffic. BGP is the routing protocol used to exchange routing information between autonomous systems (AS), enabling traffic to traverse multiple interconnected networks to reach its destination. In this case, the disruption was caused by an accidental routing policy misconfiguration on a Cloudflare router. The impact extended beyond Cloudflare customers, affecting external networks across the broader internet. In a statement addressing the incident, Cloudflare noted that on Jan. 22 it unintentionally accepted routes from certain peers and redistributed them from its Miami location to other peers and upstream providers. According to Cloudflare, and based on the definitions outlined in RFC 7908, the event constituted a combination of Type 3 and Type 4 BGP route leaks.