Access Restriction Bypass Affecting apache/httpd package, versions [2.4.17,2.4.49)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.19% (57th percentile)

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  • Snyk IDSNYK-UNMANAGED-APACHEHTTPD-3007298
  • published12 Jan 2022
  • disclosed16 Aug 2021
  • creditUnknown

Introduced: 16 Aug 2021

CVE-2021-33193  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade apache/httpd to version 2.4.49 or higher.

Overview

Affected versions of this package are vulnerable to Access Restriction Bypass. 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. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.

CVSS Scores

version 3.1