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CVE-2018-17189

MEDIUMCVSS 5.3/10EPSS 19.40%

Last modified

CVE-2018-17189 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 19.40% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Probability
19.40%

97.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApacheHttp Server2.4.17
ApacheHttp Server2.4.18
ApacheHttp Server2.4.20
ApacheHttp Server2.4.23
ApacheHttp Server2.4.25
ApacheHttp Server2.4.26
ApacheHttp Server2.4.27
ApacheHttp Server2.4.28
ApacheHttp Server2.4.29
ApacheHttp Server2.4.30
ApacheHttp Server2.4.33
ApacheHttp Server2.4.34
ApacheHttp Server2.4.35
ApacheHttp Server2.4.37
NetappSantricity Cloud ConnectorAll versions
NetappStorage Automation StoreAll versions
FedoraprojectFedora28
FedoraprojectFedora29
DebianDebian Linux9.0
OracleEnterprise Manager Ops Center12.3.3
OracleHospitality Guest Access4.2.0
OracleHospitality Guest Access4.2.1
OracleInstantis Enterprisetrack17.1
OracleInstantis Enterprisetrack17.2
OracleInstantis Enterprisetrack17.3
OracleRetail Xstore Point Of Service7.0
OracleRetail Xstore Point Of Service7.1
OracleSun Zfs Storage Appliance Kit8.8.6
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux18.10
RedhatJboss Core Services1.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-17189?
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.
How severe is CVE-2018-17189?
CVE-2018-17189 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 19.40% probability of exploitation in the next 30 days.
How do I fix CVE-2018-17189?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-17189?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST