High severity · published Nov 7, 2018
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 CPU usage
7.5
CVSS
12.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)12.7% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0 · source: NVD
NG
Nginx · F5
1.9.5 before 1.14.1; 1.15.0 before 1.15.6 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 18.10 · source: NVD
XC
Xcode · Apple
before 13.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-16844
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-16844
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html
Mailing List
http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.html
Mailing List
http://seclists.org/fulldisclosure/2021/Sep/36
Third Party Advisory
http://www.securityfocus.com/bid/105868
Third Party Advisory
http://www.securitytracker.com/id/1042038
Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3680
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