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Community Manager Community Manager
Community Manager


A flaw found in HTTP/2 protocol multiplexed stream handling allows a client to repeatedly make a request for a new multiplex stream and immediately send an RST_STREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any server-side limit for the maximum number of active streams per connection, resulting in a denial of service due to server resource consumption.

Products not listed in the Products Potentially Affected section have not been evaluated. Furthermore, products that have exceeded any software maintenance time periods are also not evaluated and will not be published. Please consult End of Sale and End of Service Life - Extreme Networks for the EOL notices related to the product under question.

Products Potentially Affected

OS/Product Exposure
Switch Engine (EXOS) No
NetIron OS Investigating

Repair Recommendations

Please see the full Security Advisory article here for more details and updated information.