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Amazon Linux AMI : lighttpd (ALAS-2023-1705)

high Nessus Plugin ID 173282

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Synopsis

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

Description

The version of lighttpd installed on the remote host is prior to 1.4.53-1.37. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1705 advisory.

 - In lighttpd 1.4.65, mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received. It leads to null pointer dereference which crashes the server. It could be used by an external attacker to cause denial of service condition. (CVE-2022-37797)

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 lighttpd' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2023-1705.html

https://alas.aws.amazon.com/cve/html/CVE-2022-37797.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: High

ID: 173282

File Name: ala_ALAS-2023-1705.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/22/2023

Updated: 4/20/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2022-37797

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:amazon:linux:lighttpd, p-cpe:/a:amazon:linux:lighttpd-debuginfo, p-cpe:/a:amazon:linux:lighttpd-fastcgi, p-cpe:/a:amazon:linux:lighttpd-mod_authn_gssapi, p-cpe:/a:amazon:linux:lighttpd-mod_authn_mysql, p-cpe:/a:amazon:linux:lighttpd-mod_authn_pam, p-cpe:/a:amazon:linux:lighttpd-mod_geoip, p-cpe:/a:amazon:linux:lighttpd-mod_mysql_vhost, cpe:/o:amazon:linux

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/17/2023

Vulnerability Publication Date: 9/12/2022

Reference Information

CVE: CVE-2022-37797