ID CVE-2019-15226
Summary Upon receiving each incoming request header data, Envoy will iterate over existing request headers to verify that the total size of the headers stays below a maximum limit. The implementation in versions 1.10.0 through 1.11.1 for HTTP/1.x traffic and all versions of Envoy for HTTP/2 traffic had O(n^2) performance characteristics. A remote attacker may craft a request that stays below the maximum request header size but consists of many thousands of small headers to consume CPU and result in a denial-of-service attack.
Vulnerable Configurations
Base: None
Last major update 09-10-2019 - 12:21
Published 09-10-2019 - 12:15
Last modified 09-10-2019 - 12:21
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