Apache 2.4.x < 2.4.49 Multiple Vulnerabilities

critical Web App Scanning Plugin ID 112981

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Synopsis

Apache 2.4.x < 2.4.49 Multiple Vulnerabilities

Description

According to its banner, the version of Apache running on the remote host is 2.4.x prior to 2.4.49. It is, therefore, affected by multiple vulnerabilities:

- A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. (CVE-2021-33193)

- Malformed requests may cause the server to dereference a NULL pointer. (CVE-2021-34798)

- A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). (CVE-2021-36160)

- ap_escape_quotes() may write beyond the end of a buffer when given malicious input. (CVE-2021-39275)

- A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. (CVE-2021-40438)

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

Solution

Upgrade to Apache version 2.4.49 or later.

See Also

https://archive.apache.org/dist/httpd/CHANGES_2.4.49

https://httpd.apache.org/security/vulnerabilities_24.html#2.4.49

Plugin Details

Severity: Critical

ID: 112981

Type: remote

Family: Component Vulnerability

Published: 9/17/2021

Updated: 3/14/2023

Scan Template: api, basic, full, pci, scan

Risk Information

VPR

Risk Factor: High

Score: 8.1

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS Score Source: CVE-2021-39275

CVSS v3

Risk Factor: Critical

Base Score: 9.8

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

CVSS Score Source: CVE-2021-39275

Vulnerability Information

CPE: cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/16/2021

Vulnerability Publication Date: 9/16/2021

CISA Known Exploited Vulnerability Due Dates: 12/15/2021

Reference Information

CVE: CVE-2021-33193, CVE-2021-34798, CVE-2021-36160, CVE-2021-39275, CVE-2021-40438

CWE: 119, 125, 444, 476, 787, 918

OWASP: 2010-A6, 2013-A5, 2013-A9, 2017-A6, 2017-A9, 2021-A10, 2021-A4, 2021-A6

WASC: Application Misconfiguration, Buffer Overflow, HTTP Request Smuggling

CAPEC: 10, 100, 105, 123, 14, 24, 33, 42, 44, 45, 46, 47, 540, 8, 9

DISA STIG: APSC-DV-002560, APSC-DV-002590, APSC-DV-002630

HIPAA: 164.306(a)(1), 164.306(a)(2), 164.312(a)(1), 164.312(e)

ISO: 27001-A.12.6.1, 27001-A.13.1.3, 27001-A.13.2.1, 27001-A.14.1.2, 27001-A.14.1.3, 27001-A.14.2.5

NIST: sp800_53-AC-4, sp800_53-CM-6b, sp800_53-SI-16

OWASP API: 2019-API7, 2023-API7, 2023-API8

OWASP ASVS: 4.0.2-14.2.1, 4.0.2-5.1.3, 4.0.2-5.2.6

PCI-DSS: 3.2-2.2, 3.2-6.2, 3.2-6.3, 3.2-6.4, 3.2-6.5, 3.2-6.5.1, 3.2-6.5.2, 3.2-6.5.9, 3.2-6.6, 3.2-6.7