Detections
Analytics

Amazon Linux 2 : mod_http2 (ALAS-2018-1104)

high Nessus Plugin ID 118835

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

In Apache HTTP Server, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.(CVE-2018-11763)

Solution

Run 'yum update mod_http2' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2018-1104.html

Plugin Details

Severity: High

ID: 118835

File Name: al2_ALAS-2018-1104.nasl

Version: 1.5

Type: local

Agent: unix

Published: 11/9/2018

Updated: 2/18/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2018-11763

CVSS v3

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: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: manual

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:mod_http2, p-cpe:/a:amazon:linux:mod_http2-debuginfo, cpe:/o:amazon:linux:2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/7/2018

Vulnerability Publication Date: 9/25/2018

Reference Information

CVE: CVE-2018-11763

ALAS: 2018-1104