Vulnerability in Apache Http_server
CVE-2019-17567
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 conn…
Vulnerability class: HTTP Request Smuggling
EPSS: 0.603 (99.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Apache Http_server
- Apache Software Foundation Http Server — versions 2.4.46, 2.4.43, 2.4.41
- Oracle Enterprise_manager_ops_center — versions 12.4.0.0
- Oracle Instantis_enterprisetrack — versions 17.1, 17.2, 17.3
- Oracle Zfs_storage_appliance_kit — versions 8.8
- Fedoraproject Fedora — versions 34, 35
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Release Notes, Vendor Advisory)
- security@apache.org (Mailing List, Vendor Advisory)
- security@apache.org (mailing-list)
- security@apache.org (mailing-list)
- security@apache.org (mailing-list, Mailing List, Third Party Advisory, Mitigation)
- security@apache.org (vendor-advisory, Third Party Advisory)
- security@apache.org (vendor-advisory)
- security@apache.org (vendor-advisory)
- security@apache.org (Third Party Advisory)
- security@apache.org (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-17567?
- CVE-2019-17567 is a medium-severity vulnerability in Apache Http_server, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 5.3/10. Published 2021-06-10.
- How severe is CVE-2019-17567?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2019-17567 known to be exploited?
- 16 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.