Amazon Linux 2 : httpd (ALAS-2024-2594)

critical Nessus Plugin ID 202996

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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 2.4.61-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2024-2594 advisory.

Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests.Users are recommended to upgrade to version 2.4.60, which fixes this issue. (CVE-2024-38473)

Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts indirectories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI.

Users are recommended to upgrade to version 2.4.60, which fixes this issue.

Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag UnsafeAllow3F is specified. (CVE-2024-38474)

Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure.

Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag UnsafePrefixStat can be used to opt back in once ensuring the substitution is appropriately constrained.
(CVE-2024-38475)

Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable.

Users are recommended to upgrade to version 2.4.60, which fixes this issue. (CVE-2024-38476)

null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request.Users are recommended to upgrade to version 2.4.60, which fixes this issue. (CVE-2024-38477)

Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy.Users are recommended to upgrade to version 2.4.60, which fixes this issue. (CVE-2024-39573)

A regression in the core of Apache HTTP Server 2.4.60 ignores some use of the legacy content-type based configuration of handlers. AddType and similar configuration, under some circumstances where files are requested indirectly, result in source code disclosure of local content. For example, PHP scripts may be served instead of interpreted.

Users are recommended to upgrade to version 2.4.61, which fixes this issue. (CVE-2024-39884)

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' to update your system.

Plugin Details

Severity: Critical

ID: 202996

File Name: al2_ALAS-2024-2594.nasl

Version: 1.3

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 7/23/2024

Updated: 8/22/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2024-38476

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/18/2024

Vulnerability Publication Date: 7/1/2024

Reference Information

CVE: CVE-2024-38473, CVE-2024-38474, CVE-2024-38475, CVE-2024-38476, CVE-2024-38477, CVE-2024-39573, CVE-2024-39884

Detections

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