What’s Vulnerable › Vulnerabilities
CVE-2016-8743
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 13.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2017-07-27 · updated 2026-06-17
Description
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.
Affected products
- Apache HTTP Server: from 2.2.0 through 2.2.31; from 2.4.1 through 2.4.23
- Debian Linux: 8.0, 9.0
- Clustered Data ONTAP: all versions
- NetApp OnCommand Unified Manager for 7-Mode (core package): all versions
- RedHat Enterprise Linux Desktop: 6.0, 7.0
- RedHat Enterprise Linux Eus: 7.3, 7.4, 7.5, 7.6, 7.7
- RedHat Enterprise Linux Server: 6.0, 7.0
- RedHat Enterprise Linux Server Aus: 7.3, 7.4, 7.6, 7.7
- RedHat Enterprise Linux Server Tus: 7.3, 7.6, 7.7
- RedHat Enterprise Linux Workstation: 6.0, 7.0
- RedHat Jboss Core Services: 1.0
References
- http://rhn.redhat.com/errata/RHSA-2017-1415.html
- http://www.debian.org/security/2017/dsa-3796
- http://www.securityfocus.com/bid/95077
- http://www.securitytracker.com/id/1037508
- https://access.redhat.com/errata/RHSA-2017:0906
- https://access.redhat.com/errata/RHSA-2017:1161
- https://access.redhat.com/errata/RHSA-2017:1413
- https://access.redhat.com/errata/RHSA-2017:1414
- https://access.redhat.com/errata/RHSA-2017:1721
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbmu03753en_us
- https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03725en_us
- https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-8743
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