CVE-2019-17567: mod_proxy_wstunnel tunneling of non Upgraded connections
Apache HTTP Server versions 2.4.6 to 2.4.46 modproxywstunnel configured on an URL that is not necessarily Upgraded by the origin server was tunneling the whole connection regardless, thus allowing for subsequent requests on the same connection to pass through with no HTTP validation, authentication or authorization possibly configured.
Other sources
modproxywstunnel tunneling of non Upgraded connection in Apache httpd before 2.4.48.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/httpdto a version that resolves this vulnerability.Fixed in 2.4.47 - Upgrade
Upgrade
Apache HTTP Serverto a version that resolves this vulnerability.Fixed in 2.4.48
Event History
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2019-17567.
What is the severity of CVE-2019-17567?
The severity of CVE-2019-17567 is medium.
Which versions of Apache HTTP Server are affected?
Versions 2.4.6 to 2.4.46 of Apache HTTP Server are affected.
How can I fix CVE-2019-17567?
To fix CVE-2019-17567, upgrade to version 2.4.47 of Apache HTTP Server.
Where can I find more information about CVE-2019-17567?
You can find more information about CVE-2019-17567 at the following references: [1] [2] [3].