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FreeBSD : Apache httpd -- denial of service in HTTP/2 (cb0bf1ec-bb92-11e6-a9a5-b499baebfeaf)

high Nessus Plugin ID 95586

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

mod_http2 reports :

The Apache HTTPD web server (from 2.4.17-2.4.23) did not apply limitations on request headers correctly when experimental module for the HTTP/2 protocol is used to access a resource.

The net result is that a the server allocates too much memory instead of denying the request. This can lead to memory exhaustion of the server by a properly crafted request.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?61779cd5

https://github.com/icing/mod_h2/releases/tag/v1.8.3

http://www.nessus.org/u?d8a6044f

Plugin Details

Severity: High

ID: 95586

File Name: freebsd_pkg_cb0bf1ecbb9211e6a9a5b499baebfeaf.nasl

Version: 3.6

Type: local

Published: 12/7/2016

Updated: 1/4/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:apache24, p-cpe:/a:freebsd:freebsd:mod_http2-devel, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/6/2016

Vulnerability Publication Date: 12/6/2016

Reference Information

CVE: CVE-2016-8740