Public Date:
2017-A-0010, 2017-A-0081
1406822: CVE-2016-8743 httpd: Apache HTTP Request Parsing Whitespace Defects
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.

Find out more about CVE-2016-8743 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 4.3
Base Metrics AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None

CVSS v3 metrics

CVSS3 Base Score 4
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Changed
Confidentiality None
Integrity Impact Low
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat JBoss Core Services on RHEL 6 Server (jbcs-httpd24-httpd) RHSA-2017:1414 2017-06-07
Red Hat Enterprise Linux 6 (httpd) RHSA-2017:1721 2017-07-11
Red Hat Enterprise Linux 7 (httpd) RHSA-2017:0906 2017-04-12
Red Hat JBoss Core Services 1 RHSA-2017:1415 2017-06-07
Red Hat JBoss Core Services on RHEL 7 Server (jbcs-httpd24-httpd) RHSA-2017:1413 2017-06-07
Red Hat Software Collections for Red Hat Enterprise Linux 7 (httpd24-httpd) RHSA-2017:1161 2017-04-26
Red Hat Software Collections for Red Hat Enterprise Linux 6 (httpd24-httpd) RHSA-2017:1161 2017-04-26
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

External References

Last Modified