Millions of tunneling hosts are vulnerable to attacks, DDoS attacks, researchers say

It’s bad enough, the authors write, that these hosts can be victimized by existing attacks, but they can also facilitate new distributed denial-of-service (DDoS) amplification attacks, the researchers found. One concentrates traffic in time, while the other bundles packets between vulnerable hosts, resulting in a magnification factor of at least 16 and 75, respectively.

In addition, hosts can be hit by what the authors call an Economic Denial of Sustainability (EDoS) attack, in which a host’s outgoing bandwidth is throttled, or an Administrative Denial of Service, in which vulnerable hosts send traffic that causes the host to file an abuse report with the host’s ISP , which may lead to his account being suspended.

Self defense

However, CISOs are not immune, the paper says.


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