CVE-2018-16844

HIGH severity · CVSS 7.5 · Uncontrolled resource consumption

7.5CVSS HIGH

Summary

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.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)11%

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

Affected products we track (1)

Nginx

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
http://mailman.nginx.org/pipermail/nginx-announce/2018/000220.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.htmlAdvisory
http://seclists.org/fulldisclosure/2021/Sep/36Advisory
http://www.securityfocus.com/bid/105868Advisory
http://www.securitytracker.com/id/1042038Advisory
https://access.redhat.com/errata/RHSA-2018:3680Advisory
https://access.redhat.com/errata/RHSA-2018:3681Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16844