Resource Exhaustion Affecting mod_http2 package, versions <0:1.14.1-1.amzn2


Severity

Recommended
low

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
20.07% (98th percentile)

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  • Snyk IDSNYK-AMZN2-MODHTTP2-1669901
  • 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:2 mod_http2 to version 0:1.14.1-1.amzn2 or higher.
This issue was patched in ALAS2-2019-1197.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_http2 package and not the mod_http2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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