CVE-2019-17567— mod_proxy_wstunnel tunneling of non Upgraded connections
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I. Basic Information for CVE-2019-17567
Vulnerability Information
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Vulnerability Title
mod_proxy_wstunnel tunneling of non Upgraded connections
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache HTTP Server 环境问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache HTTP Server是美国阿帕奇（Apache）基金会的一款开源网页服务器。该服务器具有快速、可靠且可通过简单的API进行扩充的特点。 Apache HTTP Server 2.4.6 to 2.4.46存在环境问题漏洞，该漏洞允许远程攻击者绕过已实现的安全限制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.46 | - |
II. Public POCs for CVE-2019-17567
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|---|
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- https://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
- http://httpd.apache.org/security/vulnerabilities_24.htmlx_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210702-0001/x_refsource_CONFIRM
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2019-17567
Same Patch Batch · Apache Software Foundation · 2021-06-10 · 7 CVEs total
| CVE-2021-30641 | Unexpected URL matching with 'MergeSlashes OFF' | |
| CVE-2021-26691 | Apache HTTP Server mod_session response handling heap overflow | |
| CVE-2021-26690 | mod_session NULL pointer dereference | |
| CVE-2020-13950 | mod_proxy_http NULL pointer dereference | |
| CVE-2020-35452 | mod_auth_digest possible stack overflow by one nul byte | |
| CVE-2020-13938 | Improper Handling of Insufficient Privileges |
IV. Related Vulnerabilities
Same product: Apache HTTP Server
- CVE-2026-28780
Apache HTTP Server: buffer overflow in mod_proxy_ajp via aj - CVE-2026-29168
Apache HTTP Server: mod_md unrestricted OCSP response - CVE-2026-29169
Apache HTTP Server: mod_dav_lock indirect lock crash - CVE-2026-23918
Apache HTTP Server: http2: double free and possible RCE on e - CVE-2026-33006
Apache HTTP Server: mod_auth_digest timing attack
Same vendor: Apache Software Foundation
- CVE-2026-39816
Apache NiFi: Missing Execute Code Required Permission on Tin - CVE-2026-25199
Apache CloudStack: Proxmox Extension Allows Unauthorized Cro - CVE-2026-25077
Apache CloudStack: Unauthenticated Command Injection in Dire - CVE-2025-69233
Apache CloudStack: Domain/account resources limits not honor - CVE-2025-66467
Apache CloudStack: MinIO policy remains intact on bucket del
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