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CVE-2018-16843

HIGH
7.5
CVSS Score
Published: November 7, 2018 at 02:00 PM UTC
Updated: June 17, 2026 at 01:44 AM UTC
5 products affected across 5 vendorsDebian LinuxUbuntu LinuxLeap

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Severity
HIGH7.5
Exploit prediction
EPSS 48%

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 memory consumption. 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Xcode· Apple
95%
v < 13.0
Affected range stops below 13.0, so it looks safe — our inference, not a vendor statement
Ubuntu Linux· Canonicalrubygems
95%
14.0416.0418.0418.10
Debian Linux· Debiandrupal
95%
9.0
NGINX· F5
95%
1.15.0 < v < 1.15.61.9.5 < v < 1.14.11.14.11.15.6
Affected range stops below 1.14.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.15.6, so it looks safe — our inference, not a vendor statement
Leap· openSUSEdrupal
95%
15.1

References (12)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html
x_refsource_MISCMailing ListVendor Advisory
Source: [email protected]
http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.html
Mailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2021/Sep/36
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/105868
VDB Entryx_refsource_SECTRACKThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1042038
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3653
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3680
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3681

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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