CVE-2019-17567

mod_proxy_wstunnel tunneling of non Upgraded connections

MEDIUM
5.3
CVSS Score
Published: June 10, 2021 at 07:10 AM UTC
Updated: June 17, 2026 at 02:24 AM UTC
5 products affected across 3 vendorsFedoraHTTP ServerZfs Storage Appliance Kit

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Severity
MEDIUM5.3
Exploit prediction
EPSS 60%

Description

Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunnel 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.

Affected

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-444

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