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FreeBSD : Apache httpd -- Multiple vulnerabilities (d7efc2ad-37af-11ef-b611-84a93843eb75)

critical Nessus Plugin ID 201253

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the d7efc2ad-37af-11ef-b611-84a93843eb75 advisory.

 The Apache httpd project reports:
 DoS by Null pointer in websocket over HTTP/2 (CVE-2024-36387) (Low).
 Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance.
 Proxy encoding problem (CVE-2024-38473) (Moderate).
 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.
 Weakness with encoded question marks in backreferences (CVE-2024-38474) (Important). Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI.
 Weakness in mod_rewrite when first segment of substitution matches filesystem path (CVE-2024-38475) (Important). 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.
 may use exploitable/malicious backend application output to run local handlers via internal redirect (CVE-2024-38476) (Important).
 Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerable to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable.
 Crash resulting in Denial of Service in mod_proxy via a malicious request (CVE-2024-38477) (Important). 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.
 mod_rewrite proxy handler substitution (CVE-2024-39573) (Moderate).
 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.

Tenable has extracted the preceding description block directly from the FreeBSD 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

Update the affected packages.

See Also

https://httpd.apache.org/security/vulnerabilities_24.html

http://www.nessus.org/u?7db50c31

Plugin Details

Severity: Critical

ID: 201253

File Name: freebsd_pkg_d7efc2ad37af11efb61184a93843eb75.nasl

Version: 1.7

Type: local

Published: 7/2/2024

Updated: 8/22/2024

Supported Sensors: 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:freebsd:freebsd:apache24, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/1/2024

Vulnerability Publication Date: 7/1/2024

Reference Information

CVE: CVE-2024-36387, CVE-2024-38473, CVE-2024-38474, CVE-2024-38475, CVE-2024-38476, CVE-2024-38477, CVE-2024-39573

IAVA: 2024-A-0378-S