CVE-2018-11763
5.9
MEDIUM
CVSS 3.1
EPSS 51.0%
Description
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.
How to fix CVE-2018-11763
To remediate CVE-2018-11763, upgrade the affected package to a fixed version below.
- Alpine/apache2—upgrade to 2.4.35-r0 or later
- —upgrade to 2.4.35-1 or later
Is CVE-2018-11763 being exploited?
Likely — EPSS is 51.0%, placing CVE-2018-11763 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (2)
- from 0, < 2.4.35-r0
- from 0, < 2.4.35-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |