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Amazon Linux AMI : cacti (ALAS-2023-1675)

critical Nessus Plugin ID 170545

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Synopsis

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

Description

The version of cacti installed on the remote host is prior to 1.1.19-2.20. It is, therefore, affected by a vulnerability as referenced in the ALAS-2023-1675 advisory.

 A flaw was found in how Cacti grants authorization based on IP address which allows authentication bypass, and possibly arbitrary command execution if a poller_item configured with a POLLER_ACTION_SCRIPT_PHP action is present.

 This updated cacti package adds a feature allowing an administrator to explicitly list headers suitable for use in client authentication. This option is not currently enabled by default in order to preserve compatibility but may be set by default in a future release. This is consistent with the latest upstream cacti releases (1.2.23 and 1.3.0). Additional details can be found here:
 https://github.com/Cacti/cacti/security/advisories/GHSA-6p93-p743-35gf

 In order to mitigate the authentication bypass customers must set the new $proxy_headers configuration option in /etc/cacti/db.php appropriately for their environment by either setting it to false or an array of the headers for cacti to trust.

 Additionally, customers are strongly recommended to:

 1. Consider using user authentication via a reverse proxy front end like httpd or nginx2. Cacti administrators should configure the client-facing web server or reverse proxy to strip any trusted headers provided by untrusted sources, to prevent them from reaching the Cacti server and being used to bypass the authentication process.



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 cacti' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2023-1675.html

https://alas.aws.amazon.com/cve/html/CVE-2022-46169.html

Plugin Details

Severity: Critical

ID: 170545

File Name: ala_ALAS-2023-1675.nasl

Version: 1.4

Type: local

Agent: unix

Published: 1/24/2023

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

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

CVSS Score Source: CVE-2022-46169

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:cacti

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: 1/19/2023

Vulnerability Publication Date: 12/5/2022

CISA Known Exploited Vulnerability Due Dates: 3/9/2023

Exploitable With

Core Impact

Metasploit (Cacti 1.2.22 unauthenticated command injection)

Reference Information

CVE: CVE-2022-46169