CVE-2018-17189

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 20.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-01-30 · updated 2026-06-17
Weakness: CWE-400

Description

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.

Affected products

Apache HTTP Server: 2.4.17, 2.4.18, 2.4.20, 2.4.23, 2.4.25, 2.4.26 (+8)
Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 18.10
Debian Linux: 9.0
Fedoraproject Fedora: 28, 29
NetApp Santricity Cloud Connector: all versions
NetApp Storage Automation Store: all versions
Oracle Corporation Enterprise Manager Ops Center: 12.3.3
Oracle Corporation Hospitality Guest Access: 4.2.0, 4.2.1
Oracle Instantis Enterprisetrack: 17.1, 17.2, 17.3
Oracle Corporation Retail Xstore Point of Service: 7.0, 7.1
Oracle Corporation Sun ZFS Storage Appliance Kit (AK) Software: 8.8.6
RedHat Jboss Core Services: 1.0

References

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