CVE-2019-9517

Summary:

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

Reference Links(if available):

https://kb.cert.org/vuls/id/605641/

https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md

https://lists.apache.org/thread.html/4610762456644181b267c846423b3a990bd4aaea1886ecc7d51febdb@%3Cannounce.httpd.apache.org%3E

https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba@%3Ccvs.httpd.apache.org%3E

http://www.openwall.com/lists/oss-security/2019/08/15/7

CVSS Score (if available)

v2: / MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:C

v3: / HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Links to Exploits(if available)