Detections
Analytics

Amazon Linux 2 : httpd (ALAS-2021-1672)

high Nessus Plugin ID 150994

Language:

Synopsis

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

Description

The version of httpd installed on the remote host is prior to 2.4.46-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2021-1672 advisory.

 A null pointer de-reference was found in the way httpd handled specially crafted HTTP/2 request. A remote attacker could use this flaw to crash the httpd child process, causing temporary denial of service.
 (CVE-2021-31618)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update httpd' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2021-1672.html

https://access.redhat.com/security/cve/CVE-2021-31618

Plugin Details

Severity: High

ID: 150994

File Name: al2_ALAS-2021-1672.nasl

Version: 1.4

Type: local

Agent: unix

Published: 6/24/2021

Updated: 12/11/2024

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: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-31618

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:httpd-tools, p-cpe:/a:amazon:linux:mod_ldap, p-cpe:/a:amazon:linux:mod_proxy_html, p-cpe:/a:amazon:linux:mod_session, p-cpe:/a:amazon:linux:mod_ssl, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:httpd-devel, p-cpe:/a:amazon:linux:httpd-debuginfo, p-cpe:/a:amazon:linux:mod_md, p-cpe:/a:amazon:linux:httpd, p-cpe:/a:amazon:linux:httpd-manual, p-cpe:/a:amazon:linux:httpd-filesystem

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/24/2021

Vulnerability Publication Date: 6/1/2021

Reference Information

CVE: CVE-2021-31618

ALAS: 2021-1672

IAVA: 2021-A-0259-S