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Amazon Linux AMI : httpd (ALAS-2017-892)

critical Nessus Plugin ID 103226

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Synopsis

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

Description

A NULL pointer dereference flaw was found in the httpd's mod_ssl module. A remote attacker could use this flaw to cause an httpd child process to crash if another module used by httpd called a certain API function during the processing of an HTTPS request. (CVE-2017-3169)

It was discovered that the use of httpd's ap_get_basic_auth_pw() API function outside of the authentication phase could lead to authentication bypass. A remote attacker could possibly use this flaw to bypass required authentication if the API was used incorrectly by one of the modules used by httpd. (CVE-2017-3167)

A buffer over-read flaw was found in the httpd's mod_mime module. A user permitted to modify httpd's MIME configuration could use this flaw to cause httpd child process to crash. (CVE-2017-7679)

It was discovered that the httpd's mod_auth_digest module did not properly initialize memory before using it when processing certain headers related to digest authentication. A remote attacker could possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash by sending specially crafted requests to a server. (CVE-2017-9788)

Solution

Run 'yum update httpd' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2017-892.html

Plugin Details

Severity: Critical

ID: 103226

File Name: ala_ALAS-2017-892.nasl

Version: 3.6

Type: local

Agent: unix

Published: 9/15/2017

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: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

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: 9/13/2017

Reference Information

CVE: CVE-2017-3167, CVE-2017-3169, CVE-2017-7679, CVE-2017-9788

ALAS: 2017-892