Resource Exhaustion Affecting httpd:2.4/mod_session package, versions <0:2.4.37-30.module+el8.3.0+7001+0766b9e7


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.34% (73rd percentile)

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  • Snyk IDSNYK-RHEL8-HTTPD-4865884
  • published26 Jul 2021
  • disclosed22 Jan 2019

Introduced: 22 Jan 2019

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

How to fix?

Upgrade RHEL:8 httpd:2.4/mod_session to version 0:2.4.37-30.module+el8.3.0+7001+0766b9e7 or higher.
This issue was patched in RHSA-2020:4751.

NVD Description

Note: Versions mentioned in the description apply only to the upstream httpd:2.4/mod_session package and not the httpd:2.4/mod_session package as distributed by RHEL. See How to fix? for RHEL:8 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 Scores

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