Resource Exhaustion Affecting httpd24 package, versions <0:2.4.38-1.86.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
19.4% (98th percentile)

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  • Snyk IDSNYK-AMZN201803-HTTPD24-1717040
  • published27 Sept 2021
  • disclosed30 Jan 2019

Introduced: 30 Jan 2019

CVE-2018-17189  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 httpd24 to version 0:2.4.38-1.86.amzn1 or higher.
This issue was patched in ALAS-2019-1166.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd24 package and not the httpd24 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections.

References

CVSS Base Scores

version 3.1