CVE-2016-6581

https://notcve.org/view.php?id=CVE-2016-6581

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK dynamic header table into the dynamic header table. The attacker can then send a header block that is simply repeated requests to expand that field in the dynamic table. This can lead to a gigantic compression ratio of 4,096 or better, meaning that 16kB of data can decompress to 64MB of data on the target machine. Una implementación de HTTP/2 construida usando cualquier versión de la librería de Python HPACK entre las versiones v1.0.0 y v2.2.0 podría ser atacada por un ataque de denegación de servicio, especialmente un ataque llamado "HPACK Bomb". • http://www.securityfocus.com/bid/92315 https://python-hyper.org/hpack/en/latest/security/CVE-2016-6581.html • CWE-399: Resource Management Errors •