Detections
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Amazon Linux AMI : httpd (ALAS-2017-851)

high Nessus Plugin ID 101004

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Synopsis

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

Description

Apache HTTP Request Parsing Whitespace Defects

It was discovered that the HTTP parser in httpd incorrectly allowed certain characters not permitted by the HTTP protocol specification to appear unencoded in HTTP request headers. If httpd was used in conjunction with a proxy or backend server that interpreted those characters differently, a remote attacker could possibly use this flaw to inject data into HTTP responses, resulting in proxy cache poisoning.(CVE-2016-8743)

Solution

Run 'yum update httpd' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2017-851.html

Plugin Details

Severity: High

ID: 101004

File Name: ala_ALAS-2017-851.nasl

Version: 3.4

Type: local

Agent: unix

Published: 6/23/2017

Updated: 4/18/2018

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:httpd-tools, p-cpe:/a:amazon:linux:mod_ssl, p-cpe:/a:amazon:linux:httpd-devel, p-cpe:/a:amazon:linux:httpd-debuginfo, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:httpd, p-cpe:/a:amazon:linux:httpd-manual

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

Patch Publication Date: 6/22/2017

Reference Information

CVE: CVE-2016-8743

ALAS: 2017-851