You appear to be offline. Some site functionality may not work.
Try Fastly free Call Us

Security advisories

Vulnerability in Linux Kernel TCP implementation

August 6, 2018

Summary

On August 6, 2018, a vulnerability in the Linux kernel TCP implementation, called SegmentSmack, was publicly disclosed. This vulnerability allowed a remote attacker to cause a denial-of-service attack on a target server by simply establishing a TCP connection to the server and sending specific segments over the connection. Fastly has worked with the security community in advance of this disclosure to address this vulnerability in our edge networks. They pose no threat to Fastly customers.

Impact

Fastly has deployed kernel- and application-level mitigations to our entire edge network, rendering ineffective all known attacks that exploit this vulnerability.

Fix / Workarounds

Customers do not need to take any action in response to this vulnerability.

More information

You can learn more about this vulnerability here.

Subscribe to security advisories.

We send emails from time to time about upcoming events, new products, & the latest industry trends, but only if you want them. Check the box to consent to receive these messages.

Thanks for subscribing