CVE-2019-17567

Name: CVE-2019-17567
Creator: NVD / NIST
Published: 2021-06-10T07:15:07.2+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 60.27%

Last modified Jun 17, 2026

CVE-2019-17567 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 60.27% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

60.27%

99.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-444

Affected Software

Vendor	Product	Versions
Apache	Http Server	>= 2.4.6, <= 2.4.46
Fedoraproject	Fedora	34
Fedoraproject	Fedora	35
Oracle	Enterprise Manager Ops Center	12.4.0.0
Oracle	Instantis Enterprisetrack	17.1
Oracle	Instantis Enterprisetrack	17.2
Oracle	Instantis Enterprisetrack	17.3
Oracle	Zfs Storage Appliance Kit	8.8

References

http://httpd.apache.org/security/vulnerabilities_24.htmlRelease Notes, Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/06/10/2Mailing List, Mitigation, Third Party Advisory
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org%3E
https://lists.apache.org/thread.html/r90f693a5c9fb75550ef1412436d5e682a5f845beb427fa6f23419a3c%40%3Cannounce.httpd.apache.org%3E
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3EMailing List, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
https://security.gentoo.org/glsa/202107-38Third Party Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlThird Party Advisory
http://httpd.apache.org/security/vulnerabilities_24.htmlRelease Notes, Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/06/10/2Mailing List, Mitigation, Third Party Advisory
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org%3E
https://lists.apache.org/thread.html/r90f693a5c9fb75550ef1412436d5e682a5f845beb427fa6f23419a3c%40%3Cannounce.httpd.apache.org%3E
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3EMailing List, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/05/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
https://security.gentoo.org/glsa/202107-38Third Party Advisory
https://security.netapp.com/advisory/ntap-20210702-0001/Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlThird Party Advisory

Timeline

Published: Jun 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17567?

How severe is CVE-2019-17567?

CVE-2019-17567 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 60.27% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17567?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17567?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST