CVE & CISA-KEV Catalog

CVE-2018-16844

HIGHEPSS 96th pctl
7.5
CVSS v3
NVD

Description

nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive CPU usage. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.

How to fix

Remediation Available
nginxDebian
Fixed in:1.14.1-1CVE-2018-16844
Fixed in:1.14.1-1CVE-2018-16844
Fixed in:1.14.1-1CVE-2018-16844
Fixed in:1.14.1-1CVE-2018-16844
nginxUbuntu
Fixed in:1.4.6-1ubuntu3.9USN-3812-1
Fixed in:1.10.3-0ubuntu0.16.04.3USN-3812-1
Fixed in:1.14.0-0ubuntu1.2USN-3812-1
nginx-commonUbuntu
Fixed in:1.4.6-1ubuntu3.9USN-3812-1
Fixed in:1.10.3-0ubuntu0.16.04.3USN-3812-1
Fixed in:1.14.0-0ubuntu1.2USN-3812-1
nginx-coreUbuntu
Fixed in:1.4.6-1ubuntu3.9USN-3812-1
Fixed in:1.10.3-0ubuntu0.16.04.3USN-3812-1
Fixed in:1.14.0-0ubuntu1.2USN-3812-1
nginx-extrasUbuntu
Fixed in:1.4.6-1ubuntu3.9USN-3812-1
Fixed in:1.10.3-0ubuntu0.16.04.3USN-3812-1
Fixed in:1.14.0-0ubuntu1.2USN-3812-1
nginx-fullUbuntu
Fixed in:1.4.6-1ubuntu3.9USN-3812-1
Fixed in:1.10.3-0ubuntu0.16.04.3USN-3812-1
Fixed in:1.14.0-0ubuntu1.2USN-3812-1
nginx-lightUbuntu
Fixed in:1.4.6-1ubuntu3.9USN-3812-1
Fixed in:1.10.3-0ubuntu0.16.04.3USN-3812-1
Fixed in:1.14.0-0ubuntu1.2USN-3812-1

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

12.40%probability of exploitation in 30 days
96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Related Vulnerabilities

Other CWE-400 (Resource Exhaustion) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2023-44487High7.5100%KEVFix
CVE-2021-44228Critical10.0100%KEV + RansomFix
CVE-2011-3192High7.899%-Fix
CVE-2019-11478Medium5.395%-Fix
CVE-2024-25617Medium5.389%-Fix
CVE-2018-1000115High7.588%-Fix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.