Home/CVE/nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive
CVE

CVE-2018-16844

nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive

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.

HIGH · CVSS 7.5 EPSS 0.11144
Schedule remediation
  • EPSS ≥ 0.10 - elevated exploitation probability
  • EPSS percentile: top 6% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

5
f5 nginx>= 1.9.5 and < 1.14.1
f5 nginx>= 1.15.0 and < 1.15.6
debian linuxall versions
canonical ubuntu linuxall versions
apple xcode< 13.0
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighNginx Core Dump
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Nov 2018 · 02:29 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

7
suse-csafopenSUSE-SU-2019:2120-1
suse-csafSUSE-SU-2019:2309-1
suse-csafopenSUSE-SU-2019:0195-1
suse-csafSUSE-SU-2019:0334-1
usnUSN-3812-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.htmlThird Party Advisory
http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.htmlMailing ListVendor Advisory
http://seclists.org/fulldisclosure/2021/Sep/36Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/105868Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042038Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16844Issue Tracking
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