CVE-2016-8743
httpd: Apache HTTP Request Parsing Whitespace Defects
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Apache HTTP Server, in all releases prior to 2.2.32 and 2.4.25, was liberal in the whitespace accepted from requests and sent in response lines and headers. Accepting these different behaviors represented a security concern when httpd participates in any chain of proxies or interacts with back-end application servers, either through mod_proxy or using conventional CGI mechanisms, and may result in request smuggling, response splitting and cache pollution.
El servidor HTTP Apache, en todas las distribuciones anteriores a la 2.2.32 y la 2.4.25 era liberal en el espacio en blanco aceptado de peticiones y enviado en lineas y cabeceras de respuesta. La aceptación de estos comportamientos diferentes representaba un problema a nivel de seguridad cuando httpd participa en cualquier cadena de proxies o interactúa con servidores de aplicaciones backend, ya sea mediante mod_proxy o utilizando mecanismos CGI convencionales y puede dar lugar al tráfico de peticiones, división de respuestas y contaminación de la caché.
It was discovered that the HTTP parser in httpd incorrectly allowed certain characters not permitted by the HTTP protocol specification to appear unencoded in HTTP request headers. If httpd was used in conjunction with a proxy or backend server that interpreted those characters differently, a remote attacker could possibly use this flaw to inject data into HTTP responses, resulting in proxy cache poisoning.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2016-10-18 CVE Reserved
- 2016-12-25 CVE Published
- 2023-11-08 EPSS Updated
- 2024-09-16 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
CAPEC
References (42)
URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
https://security.gentoo.org/glsa/201701-36 | 2023-11-07 |
URL | Date | SRC |
---|---|---|
http://rhn.redhat.com/errata/RHSA-2017-1415.html | 2023-11-07 | |
http://www.debian.org/security/2017/dsa-3796 | 2023-11-07 | |
https://access.redhat.com/errata/RHSA-2017:0906 | 2023-11-07 | |
https://access.redhat.com/errata/RHSA-2017:1161 | 2023-11-07 | |
https://access.redhat.com/errata/RHSA-2017:1413 | 2023-11-07 | |
https://access.redhat.com/errata/RHSA-2017:1414 | 2023-11-07 | |
https://access.redhat.com/errata/RHSA-2017:1721 | 2023-11-07 | |
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-8743 | 2023-11-07 | |
https://access.redhat.com/security/cve/CVE-2016-8743 | 2017-07-11 | |
https://bugzilla.redhat.com/show_bug.cgi?id=1406822 | 2017-07-11 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Redhat Search vendor "Redhat" | Jboss Core Services Search vendor "Redhat" for product "Jboss Core Services" | 1.0 Search vendor "Redhat" for product "Jboss Core Services" and version "1.0" | - |
Affected
| in | Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0" | - |
Safe
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Redhat Search vendor "Redhat" | Jboss Core Services Search vendor "Redhat" for product "Jboss Core Services" | 1.0 Search vendor "Redhat" for product "Jboss Core Services" and version "1.0" | - |
Affected
| in | Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Safe
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Apache Search vendor "Apache" | Http Server Search vendor "Apache" for product "Http Server" | >= 2.2.0 <= 2.2.31 Search vendor "Apache" for product "Http Server" and version " >= 2.2.0 <= 2.2.31" | - |
Affected
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Apache Search vendor "Apache" | Http Server Search vendor "Apache" for product "Http Server" | >= 2.4.1 <= 2.4.23 Search vendor "Apache" for product "Http Server" and version " >= 2.4.1 <= 2.4.23" | - |
Affected
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Netapp Search vendor "Netapp" | Clustered Data Ontap Search vendor "Netapp" for product "Clustered Data Ontap" | - | - |
Affected
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Netapp Search vendor "Netapp" | Oncommand Unified Manager Search vendor "Netapp" for product "Oncommand Unified Manager" | - | 7-mode |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 7.3 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "7.3" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 7.4 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "7.4" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 7.5 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "7.5" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "7.6" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Eus Search vendor "Redhat" for product "Enterprise Linux Eus" | 7.7 Search vendor "Redhat" for product "Enterprise Linux Eus" and version "7.7" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.3 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.3" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.4 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.4" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.6" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus" | 7.7 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.7" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 7.3 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.3" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 7.6 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.6" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus" | 7.7 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.7" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0" | - |
Affected
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