In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.
Published 2018-09-25 21:29:00
Updated 2021-06-06 11:15:21
View at NVD,   CVE.org

Threat overview for CVE-2018-11763

Top countries where our scanners detected CVE-2018-11763
Top open port discovered on systems with this issue 80
IPs affected by CVE-2018-11763 1,957,075
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2018-11763!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2018-11763

Probability of exploitation activity in the next 30 days: 0.76%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 81 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2018-11763

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
4.3
MEDIUM AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
nvd@nist.gov
5.9
MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.2
3.6
nvd@nist.gov

References for CVE-2018-11763

Products affected by CVE-2018-11763

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