Fedora 30 : mod_http2 (2019-63ba15cc83) (0-Length Headers Leak) (Data Dribble) (Internal Data Buffering)

high Nessus Plugin ID 128436



The remote Fedora host is missing a security update.


Rebuilt with newer nghttp2


This update includes the latest upstream release of `mod_http2`, version **1.15.3**. Upstream changes include :

- fixes Timeout vs. KeepAliveTimeout behaviour, see PR 63534.

- Fixes stream cleanup when connection throttling is in place.

- Counts stream resets by client on streams initiated by client as cause for connection throttling.

- Header length checks are now logged similar to HTTP/1.1 protocol handler

- Header length is checked also on the merged value from several header instances and results in a 431 response.

- fixing mod_proxy_http2 to support trailers in both directions. See PR 63502.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected mod_http2 package.

See Also


Plugin Details

Severity: High

ID: 128436

File Name: fedora_2019-63ba15cc83.nasl

Version: 1.3

Type: local

Agent: unix

Published: 9/3/2019

Updated: 12/31/2019

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 5.1


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:mod_http2, cpe:/o:fedoraproject:fedora:30

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 8/30/2019

Vulnerability Publication Date: 8/13/2019

Reference Information

CVE: CVE-2019-9511, CVE-2019-9516, CVE-2019-9517