Strix
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CVE-2018-11763

UnknownEPSS 51.00%

Last modified

CVE-2018-11763 is a vulnerability of currently unknown severity. In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. EPSS estimates a 51.00% chance of exploitation in the next 30 days.

Description

In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.

Metrics

EPSS Probability
51.00%

98.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
ApacheHttp Server>= 2.4.17, <= 2.4.34
CanonicalUbuntu Linux18.04
RedhatEnterprise Linux6.0
RedhatEnterprise Linux7.0
RedhatEnterprise Linux7.4
RedhatEnterprise Linux7.5
RedhatEnterprise Linux7.6
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
OracleSecure Global Desktop5.4
NetappStorage Automation StoreAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-11763?
In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.
How severe is CVE-2018-11763?
Severity scoring for CVE-2018-11763 is pending analysis. The EPSS model estimates a 51.00% probability of exploitation in the next 30 days.
How do I fix CVE-2018-11763?
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-2018-11763?

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

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Source: NVD / NIST