CVE-2019-9517

CVE Details

Release Date:

2019-08-13

Description

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.

See more information about CVE-2019-9517 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score:	7.5	Base Metrics:	AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector:	Network	Attack Complexity:	Low
Privileges Required:	None	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (httpd)	ELSA-2019-2893	2019-09-24
Oracle Linux version 8 (mod_http2)	ELSA-2019-2893	2019-09-24
Oracle Linux version 8 (nodejs)	ELSA-2019-2925	2019-09-30
Oracle Linux version 8 (nodejs-nodemon)	ELSA-2019-2925	2019-09-30
Oracle Linux version 8 (nodejs-packaging)	ELSA-2019-2925	2019-09-30

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team