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Apache 2.4.x < 2.4.48 Multiple Vulnerabilities

critical Web App Scanning Plugin ID 112806

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Synopsis

Apache 2.4.x < 2.4.48 Multiple Vulnerabilities

Description

According to its banner, the version of Apache running on the remote host is 2.4.x prior to 2.4.48. It is, therefore, affected by multiple vulnerabilities:

 - Unexpected <Location> section matching with 'MergeSlashes OFF'. (CVE-2021-30641)

 - mod_auth_digest: possible stack overflow by one nul byte while validating the Digest nonce. (CVE-2020-35452)

 - mod_session: Fix possible crash due to NULL pointer dereference, which could be used to cause a Denial of Service with a malicious backend server and SessionHeader. (CVE-2021-26691)

 - mod_session: Fix possible crash due to NULL pointer dereference, which could be used to cause a Denial of Service. (CVE-2021-26690)

 - mod_proxy_http: Fix possible crash due to NULL pointer dereference, which could be used to cause a Denial of Service. (CVE-2020-13950)

 - Windows: Prevent local users from stopping the httpd process (CVE-2020-13938)

 - mod_proxy_wstunnel, mod_proxy_http: Handle Upgradable protocols end-to-end negotiation. (CVE-2019-17567)

 - mod_http2: Fix a potential NULL pointer dereference. (CVE-2021-31618)

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 2.4.48 or later.

See Also

https://archive.apache.org/dist/httpd/CHANGES_2.4.48

https://httpd.apache.org/security/vulnerabilities_24.html#2.4.48

Plugin Details

Severity: Critical

ID: 112806

Type: remote

Published: 6/15/2021

Updated: 3/14/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2021-26691

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-2021-26691

Vulnerability Information

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/1/2021

Vulnerability Publication Date: 6/1/2021

Reference Information

CVE: CVE-2019-17567, CVE-2020-13938, CVE-2020-13950, CVE-2020-35452, CVE-2021-26690, CVE-2021-26691, CVE-2021-30641, CVE-2021-31618

CWE: 119, 120, 122, 20, 287, 444, 476, 787, 862

OWASP: 2010-A3, 2010-A4, 2010-A8, 2013-A2, 2013-A4, 2013-A7, 2013-A9, 2017-A2, 2017-A5, 2017-A9, 2021-A1, 2021-A3, 2021-A4, 2021-A6, 2021-A7

WASC: Buffer Overflow, HTTP Request Smuggling, Improper Input Handling, Insufficient Authentication, Insufficient Authorization

CAPEC: 10, 100, 101, 104, 105, 108, 109, 110, 114, 115, 120, 123, 13, 135, 136, 14, 151, 153, 182, 194, 209, 22, 23, 230, 231, 24, 250, 261, 267, 28, 3, 31, 33, 42, 43, 44, 45, 46, 47, 473, 52, 53, 57, 588, 593, 63, 633, 64, 650, 67, 7, 71, 72, 73, 78, 79, 8, 80, 81, 83, 85, 88, 9, 92, 94

DISA STIG: APSC-DV-000460, APSC-DV-002560, APSC-DV-002590, APSC-DV-002630

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

ISO: 27001-A.12.6.1, 27001-A.13.1.1, 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, 27001-A.18.1.3, 27001-A.6.2.2, 27001-A.9.1.2, 27001-A.9.4.1, 27001-A.9.4.4, 27001-A.9.4.5

NIST: sp800_53-AC-3, sp800_53-AC-4, sp800_53-CM-6b, sp800_53-SI-10, sp800_53-SI-16

OWASP API: 2019-API7, 2023-API8

OWASP ASVS: 4.0.2-14.2.1, 4.0.2-5.1.3

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, 3.2-6.5.10, 3.2-6.5.2, 3.2-6.5.8, 3.2-6.6, 3.2-6.7