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Amazon Linux 2 : httpd, --advisory ALAS2-2025-3099 (ALAS-2025-3099)

high Nessus Plugin ID 281819

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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 2.4.66-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2025-3099 advisory.

 An integer overflow in the case of failed ACME certificate renewal leads, after a number of failures (~30 days in default configurations), to the backoff timer becoming 0. Attempts to renew the certificate then are repeated without delays until it succeeds.

 This issue affects Apache HTTP Server: from 2.4.30 before 2.4.66.

 Users are recommended to upgrade to version 2.4.66, which fixes the issue. (CVE-2025-55753)

 Apache HTTP Server 2.4.65 and earlier with Server Side Includes (SSI) enabled and mod_cgid (but not mod_cgi) passes the shell-escaped query string to #exec cmd=... directives. (CVE-2025-58098)

 Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache HTTP Server through environment variables set via the Apache configuration unexpectedly superseding variables calculated by the server for CGI programs.

 This issue affects Apache HTTP Server from 2.4.0 through 2.4.65.

 Users are recommended to upgrade to version 2.4.66 which fixes the issue. (CVE-2025-65082)

 mod_userdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP Server. Users with access to use the RequestHeader directive in htaccess can cause some CGI scripts to run under an unexpected userid. (CVE-2025-66200)

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

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

Solution

Run 'yum update httpd' or or 'yum update --advisory ALAS2-2025-3099' to update your system.

See Also

https://alas.aws.amazon.com//AL2/ALAS2-2025-3099.html

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

https://explore.alas.aws.amazon.com/CVE-2025-55753.html

https://explore.alas.aws.amazon.com/CVE-2025-58098.html

https://explore.alas.aws.amazon.com/CVE-2025-65082.html

https://explore.alas.aws.amazon.com/CVE-2025-66200.html

Plugin Details

Severity: High

ID: 281819

File Name: al2_ALAS-2025-3099.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/5/2026

Updated: 1/5/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: High

Base Score: 8.7

Temporal Score: 6.4

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

CVSS Score Source: CVE-2025-58098

CVSS v3

Risk Factor: High

Base Score: 8.3

Temporal Score: 7.2

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

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/5/2026

Vulnerability Publication Date: 12/4/2025

Reference Information

CVE: CVE-2025-55753, CVE-2025-58098, CVE-2025-65082, CVE-2025-66200