Resource Exhaustion Affecting httpd-filesystem package, versions <0:2.4.58-1.amzn2023


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.13% (49th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-HTTPDFILESYSTEM-6057494
  • published15 Nov 2023
  • disclosed23 Oct 2023

Introduced: 23 Oct 2023

CVE-2023-43622  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 httpd-filesystem to version 0:2.4.58-1.amzn2023 or higher.
This issue was patched in ALAS2023-2023-433.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd-filesystem package and not the httpd-filesystem package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known "slow loris" attack pattern. This has been fixed in version 2.4.58, so that such connection are terminated properly after the configured connection timeout.

This issue affects Apache HTTP Server: from 2.4.55 through 2.4.57.

Users are recommended to upgrade to version 2.4.58, which fixes the issue.

CVSS Scores

version 3.1