Vulnerability Details : CVE-2018-16843
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.
Products affected by CVE-2018-16843
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
- cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-16843
7.97%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 95 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-16843
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
Red Hat, Inc. | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2018-16843
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2018-16843
-
http://seclists.org/fulldisclosure/2021/Sep/36
Full Disclosure: APPLE-SA-2021-09-20-4 Xcode 13Mailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3653
RHSA-2018:3653 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.securityfocus.com/bid/105868
nginx Multiple Denial of Service VulnerabilitiesThird Party Advisory;VDB Entry
-
http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.html
[nginx-announce] nginx security advisory (CVE-2018-16843, CVE-2018-16844)Mailing List;Vendor Advisory
-
https://access.redhat.com/errata/RHSA-2018:3680
RHSA-2018:3680 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.debian.org/security/2018/dsa-4335
Debian -- Security Information -- DSA-4335-1 nginxThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16843
1644511 – (CVE-2018-16843) CVE-2018-16843 nginx: Excessive memory consumption via flaw in HTTP/2 implementationIssue Tracking;Third Party Advisory
-
https://support.apple.com/kb/HT212818
About the security content of Xcode 13 - Apple SupportThird Party Advisory
-
https://usn.ubuntu.com/3812-1/
USN-3812-1: nginx vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3681
RHSA-2018:3681 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html
[security-announce] openSUSE-SU-2019:2120-1: important: Security updateMailing List;Third Party Advisory
-
http://www.securitytracker.com/id/1042038
nginx HTTP/2 Processing Bugs Lets Remote Users Deny Service - SecurityTrackerThird Party Advisory;VDB Entry
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