CVE-2019-9511

CVE Details

Release Date:	2019-08-13
Impact:	None	What is this?

Description

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

See more information about CVE-2019-9511 from MITRE CVE dictionary and NIST NVD

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

CVSS v3 metrics

Base Score:	7.5
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version:	3.0
Attack 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 7 (nginx)	ELSA-2020-5859	2020-09-24
Oracle Linux version 7 (nginx)	ELSA-2020-5862	2020-09-28
Oracle Linux version 7 (olcne)	ELSA-2020-5859	2020-09-24
Oracle Linux version 7 (olcne)	ELSA-2020-5862	2020-09-28
Oracle Linux version 8 (nghttp2)	ELSA-2019-2692	2019-09-10
Oracle Linux version 8 (nginx)	ELSA-2019-2799	2019-09-19
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