Amazon Linux 2 : mod_auth_mellon (ALAS-2023-2077)

medium Nessus Plugin ID 176918

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Synopsis

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

Description

The version of mod_auth_mellon installed on the remote host is prior to 0.14.0-9. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2077 advisory.

A flaw was found in mod_auth_mellon where it does not sanitize logout URLs properly. This issue could be used by an attacker to facilitate phishing attacks by tricking users into visiting a trusted web application URL that redirects to an external and potentially malicious server. The highest threat from this liability is to confidentiality and integrity. (CVE-2021-3639)

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 mod_auth_mellon' to update your system.

Plugin Details

Severity: Medium

ID: 176918

File Name: al2_ALAS-2023-2077.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 6/8/2023

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.0

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2021-3639

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:mod_auth_mellon-diagnostics, p-cpe:/a:amazon:linux:mod_auth_mellon, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:mod_auth_mellon-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/5/2023

Vulnerability Publication Date: 12/17/2021

Reference Information

CVE: CVE-2021-3639

Detections

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