CVE-2019-0197
4.2
MEDIUM
CVSS 3.1
EPSS 2.2%
Description
A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue.
How to fix CVE-2019-0197
To remediate CVE-2019-0197, upgrade the affected package to a fixed version below.
- —upgrade to 2.4.39-r0 or later
- —upgrade to 2.4.38-3 or later
Is CVE-2019-0197 being exploited?
Low — EPSS is 2.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.4.39-r0
- from 0, < 2.4.38-3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L |